Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Practice question for exam, Exercises of Microbiology

Ch 1 3 19. Detailed practice questions for test. Really helped me with my studies

Typology: Exercises

2023/2024

Uploaded on 06/10/2024

alaina-ryan
alaina-ryan 🇺🇸

1 / 1

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Which%of%the%following%is%an%acellular%microorganism%lacking%a%nucleus?
Bacterium
1.
helminth
2.
Protozoan
3.
Virus
4.
1.
Name%5%types%of%microorganisms%that%we%are%studying%
2.
What%are%the%three%domains?
3.
What%are%the%6%kingdoms?
4.
List%the%5%I's%of%culturing%and%what%they%do:%
5.
What%are%the%6%branches%of%microbiology?
6.
Defend%the%argument%that%a%web%of%life%is%a%more%accurate%representation%of%evolutionary%relatedness%than%a%tree%of%life.
7.
Often%when%there%is%a%local%water%main%break,%a%town%will%post%an%advisory%to%boil%water%before%ingesting%it.%Identify%the%biological%
basis%behind%the%effectiveness%of%this%procedure%in%minimizing%illness.
8.
Identify%the%process%or%environment%in%this%list%that%is%not%affected%by%microorganisms.
9.
oxygen%cycles%
1.
recycling%of%dead%organisms
2.
human%health
3.
all%of%the%above%have%microbial%involvement
4.
Discuss%the%current%view%of%the%evolution%of%eukaryotic%cells.
10.
Describe%how%microorganisms%can%accomplish%bioremediation.
11.
Which%of%these%organisms%do%not%contain%DNA?
Helminths
a.
Bacteria
b.
Prions
c.
protozoan
d.
12.
Summarize%some%important%facets%of%the%human%microbiome.
13.
Suggest%an%argument%for%why%eukaryotic%cells%have%developed%an%%enclosed%nucleus%unlike%bacteria%and%archaea.
14.
Microbes%are%found%in%which%habitat?
human%body
a.
earth’s%crust
b.
Oceans
c.
all%of%the%above
d.
15.
Argue%for%or%against%this%statement: Microbes)intend)to)cause)human)disease.
16.
Which%of%the%following%processes%can%be%the%result%of%human%manipulation%of%microbial%genes?
the%central%dogma
a.
natural%selection
b.
Bioremediation
c.
abiogenesis
d.
17.
When%a%hypothesis%has%been%thoroughly%supported%by%long-term%study%and%data,%it%is%considered
a%law
a.
a%speculation
b.
a%theory
c.
proven
d.
18.
Defend%the%use%of%complicated-sounding%names%for%identifying%microorganisms.
19.
Microorganisms%are%best%defined%as%organisms%that
Can%only%be%found%growing%in%laboratories.
a.
Are%too%small%to%be%seen%with%the%unaided%eye
b.
Lack%a%cell%nucleus
c.
Cause%human%disease
d.
20.
Which%of%the%following%are%not%considered%microorganisms?
Fungi
a.
Protozoa
b.
Viruses
c.
Bacteria
d.
Mosquitos
e.
21.
Helminths%are%____.
22.
Molds
a.
Parasitic%worms
b.
Protozoa
c.
Infectious%particles
d.
Among%the%types%of%microorganisms,%the%_____are%noncellular
Protozoans
a.
Bacteria
b.
Viruses
c.
Helminths
d.
23.
Studies%of%the%immune%response%to%an%infection%cause%by%microorganisms%would%be%performed%by%a(n).%_____.
24.
Hypersensitivity%specialist
a.
Immunologist
b.
Geomicrobiologist
c.
Epidemiologist
d.
Which%of%the%following%pairs%of%career%descriptions%and%work%tasks%are%not%correctly%matched?
25.
Medical%Microbiologist:%identify%cause%of%a%bladder%infection%at%a%hospital%lab
a.
Industrial%microbiologist:%manipulate%bacterial%strains%to%be%less%pathogenic
b.
Agricultural%microbiologist:%identify%bacterial%causes%of%crop%disease
c.
Public%health%microbiologist:%track%the%incidence%of%AIDS%in%a%population
d.
A%scientist%who%studies%the%influence%of%microbes%in%the%formation%of%caves%is%called%a(n)%_____
26.
Astrobiologist
a.
Epidemiologist
b.
Geomicrobiologist
c.
Immunologist
d.
The%microorganisms%that%recycle%nutrients%by%breaking%down%dead%matter%and%wastes%are%called%_____.
27.
Fermenters
a.
Eukaryotes
b.
Decomposers
c.
Pathogens
d.
Prokaryotes
e.
The%majority%of%oxygen%in%earth's%atmosphere%is%a%product%of%photosynthesis%by%______.
28.
Rain%forests
a.
Microorganisms
b.
Green%plants
c.
Agricultural%lands
d.
The%three%cell%types%discussed:%eukaryotes,%archaea,%and%bacteria%are%all%derived%from
29.
Cells%with%a%true%nucleus
a.
The%last%universal%common%ancestor
b.
Photosynthetic%bacteria
c.
Archaea
d.
The%first%cells%appeared%about%____%billion%years%ago.
5
a.
4.5
b.
3.5
c.
2
d.
1
e.
30.
A%hypothesis%must%be%tested%many%times%before%it%can%be%considered%a%theory
31.
True
a.
False%
b.
Which%area%of%biology%states%that%living%things%undergo%gradual%structural%and%functional%changes%over%long%periods%of%time?
32.
Evolution
a.
Morphology
b.
Phylogeny
c.
Genetics
d.
Transformation
e.
When%humans%manipulate%the%genes%of%microorganisms,%the%process%is%called%______.
33.
Epidemiology
a.
Taxonomy
b.
Bioremediation
c.
Genetic%engineering
d.
Immunology
e.
Which%activity%is%an%example%of%biotechnology?
34.
Bacteria%in%the%soil%secreting%an%antibiotic%to%kill%competitors
a.
Public%health%officials%monitoring%diseases%in%a%community
b.
Egyptians%using%moldy%bread%on%wounds
c.
A%microbiologist%using%the%microscope%to%view%bacteria
d.
Escherichia%coli%producing%human%insulin
e.
Which%of%the%following%is%a%traditional%human%use%of%microorganisms?
35.
Baking%bread
a.
Cleaning%up%oil%spills
b.
Treating%water%and%sewage
c.
Mass-producing%antibiotics
d.
Using%microbes%to%detoxify%a%site%contaminated%with%heavy%metals%is%an%example%of%____.
36.
Biotechnology%
a.
Bioremediation%
b.
Decomposition
c.
Epidemiology%
d.
Immunology
e.
Disease%causing%microorganism:
Pathogen
A.
Decomposers
B.
Fermenters
C.
Bacteria
D.
Eukaryotes
E.
37.
The%number%one%worldwide%infections%diseases%are%____
AIDS-related%diseases
A.
Malaria%and%other%protozoan%diseases
B.
Respiratory%diseases
C.
Measles%and%other%rash%diseases
D.
Diarrheal%diseases
E.
38.
Many%chronic%medical%conditions%have%been%found%to%be%associated%with%microbial%agents
True
A.
False
B.
39.
The%incidence%of%deaths%from%communicable%disease%is%_____in%the%united%states%compared%to%the%entire%world.
Less
A.
Greater
B.
About%the%same
C.
40.
In%which%way%are%bacteria%and%eukaryotes%the%same?
Contain%nucleus%to%hold%DNA
A.
Contain%ribosomes%for%protein%synthesis
B.
Contain%membrane-bound%organelles
C.
Have%a%cell%wall%for%rigidity
D.
41.
In%which%way%are%archaea%and%eukaryotes%the%same?
Have%a%cell%wall%for%rigidity
A.
Can%use%flagella%for%movement
B.
Contain%mitochondria%for%energy%production
C.
Contain%membrane-bound%organelles
D.
42.
Organisms%called%parasites%are%______.
43.
The%decomposers%in%ecosystems
A.
Always%viruses
B.
Always%harmful%to%their%host
C.
Free-living
D.
Which%group%of%microorganisms%is%composed%only%of%hereditary%material%wrapped%in%a%protein%covering?
44.
Yeasts%
A.
Parasites
B.
Viruses
C.
Fungi
D.
Bacteria
E.
C
Which%of%the%following%unique%characteristic%of%viruses%that%distinguishes%them%from%the%other%major%groups%of%microorganisms?
Cannot%be%seen%without%a%microscope
A.
Contain%genetic%material
B.
Cause%human%disease
C.
Lack%a%nucleus
D.
Lack%cell%structure
E.
45.
Archaeal%cells%are%about%_____%bacterial%cells
Ten%times%smaller%than
A.
The%same%size%as
B.
Ten%times%larger%than
C.
46.
Many%chronic%infections%are%caused%by%microbes%that%associate%in%communities%termed
Biofilms
A.
Virions
B.
Microbiota
C.
Sediments
D.
47.
Which%of%the%following%historical%microbiologists%is%incorrectly%paired%with%his%contribution%to%the%science>
Francesco%Redi:%spontaneous%generation%with%meat%exposed%to%the%air%or%covered%with%cloth
A.
Louis%pasteur:%demonstrated%that%anthrax%was%caused%by%a%bacterium
B.
Joseph%lister:%promoted%disinfecting%hands%and%air%prior%to%surgery
C.
Antonie%van%leeuwuenhook:%made%and%used%quality%magnifying%lenses%to%observe%and%record%microorganisms
D.
48.
In%the%experiments%constructed%by%Pasteur%to%disprove%spontaneous%generations,%swan-necked%flasks%were%used.%Why%was%this%shape%
of%flask%used%in%this%experiment?
The%shape%of%the%glass%neck%allowed%the%bacteria%into%the%flask%and%then%into%the%media,%but%the%air%could%not%enter.%
A.
The%glass%necks%needed%to%be%open%to%the%air,%yet%constructed%so%that%bacteria%would%settle%in%the%lowest%part%of%the%neck
B.
These%flask%shapes%were%the%easiest%and%cheapest%to%produce
C.
Because%the%glass%necks%were%stretched%out,%the%heat%used%to%sterilize%the%medium%inside%of%the%flask%could%not%kill%the%bacteria%
in%the%neck.
D.
49.
Koch's%postulates%are%criteria%used%to%establish%that
Microbes%are%found%on%dust%particles
A.
A%specific%microbe%should%be%classified%in%a%specific%kingdom
B.
Microbes%can%be%used%to%clean%up%toxic%spills
C.
A%specific%microbe%is%the%cause%of%a%specific%disease
D.
50.
Which%of%the%following%is%not%a%recent%discovery%that%has%had%a%huge%impact%on%the%understanding%of%microbiology?
Restriction%enzymes
A.
PCR%technique
B.
Biofilms
C.
Small%RNAs
D.
All%are%significant%discoveries
E.
51.
The%sum%total%of%all%the%microbes%in%a%certain%environment%is%termed%the%____.
Microbiome
A.
Microbial%niche
B.
Domain%biofilm%phylogeny
C.
52.
Which%of%the%following%is%not%a%process%in%the%scientific%method?
Systematic%observation
A.
Development%of%a%theory
B.
Laboratory%experimentation
C.
Formulation%of%a%hypothesis
D.
Belief%in%a%preconceived%idea
E.
53.
Experimentation
First%step%in%the%scientific%method
A.
Designed%to%support%a%hypothesis
B.
Provides%a%means%to%gather%subjective%data
C.
Designed%to%refute%a%hypothesis
D.
Provides%a%means%to%gather%objective%data
E.
54.
The%scientific%method%includes%all%of%the%following%except%____
Experimentation
A.
Hypothesis
B.
Publication
C.
Observation
D.
55.
The%scientific%method%involves%formulation%a%tentative%explanation%called%the%hypothesis,%to%account%for%what%has%been%observed%or%
measured.
True
A.
False
B.
56.
Caring%for%patients%infection%with%a%new%virus%requires%safety%precautions%for%medical%personnel.%Choosing%appropriate%procedures%is%
an%example%of%a(n)%______%process.
Pathogenic
A.
Deductive
B.
Hypothetical
C.
Inductive
D.
57.
Sterile%refers%to%_____.
Homogenized
A.
Absence%of%any%life%forms%and%viral%particles
B.
Pathogen-free
C.
Pasteurized
D.
Absence%of%spores
E.
58.
Taxonomy%does%not%involve%______.
Classification
A.
A%common%name
B.
Nomenclature
C.
Identification
D.
59.
Which%scientific%field%is%involved%in%the%identification,%classification%and%naming%of%organisms?
Nomenclature
A.
Epidemiology
B.
Taxonomy
C.
Phylogeny
D.
Pathology
E.
60.
The%orderly%arrangement%of%organisms%into%a%hierarchy%of%taxa%is%called%______.
Experimentation%
A.
Biotechnology
B.
Classification
C.
Identification
D.
Nomenclature
E.
61.
Members%of%the%same%species%share%many%more%characteristics%compared%to%those%shared%by%members%of%the%same%kingdom
True
A.
False
B.
62.
Which%of%the%following%is%a%taxon%that%contains%all%other%taxa%listed??
Family
A.
Genus
B.
Kingdom
C.
Species
D.
Phylum
E.
63.
Smallest%and%most%significant%taxon%is%a%______.
Kingdom
A.
Phylum
B.
Species%
C.
Family
D.
Genus
E.
64.
Select%the%correct%descending%taxonomic%hierarchy%(left%to%right)
Class,%phylum,%order
A.
Family,%genus,%species
B.
Kingdom%domain,%phylum
C.
Family,%order,%class
D.
Genus,%species,%family
E.
65.
A%recently%developed%mnemonic%for%remembering%the%taxonomic%levels%from%domain%to%species%is%"dear%king%phillip%came%over%for
good%spaghetti"%What%does%the%word%cany%represent%in%the%taxonomic%level
Chain
A.
Culture
B.
Category
C.
Colony
D.
Class
E.
66.
Which%of%the%following%is%a%scientific%name?
Streptobacilli
A.
Gram-positive%streptococcus
B.
Anthrax
C.
Streptococcus)pyogenes
D.
67.
When%assigning%a%scientific%name%to%an%organism,
The%species%name%is%placed%first
A.
The%species%name%can%be%abbreviated
B.
Both%genus%and%species%names%are%italicized%or%underlined
C.
Both%genus%and%species%names%are%capitalized%
D.
The%species%name%is%capitalized
E.
68.
Which%scientific%name%is%written%correctly
S..%aureus
A.
Staphylococcus%aureus
B.
Staphylococcus%Aureus
C.
staphylococcus%aureus
D.
Staphylococcus)aureus
E.
69.
The%names%of%the%three%proposed%domains%are:%Bacteria,%Protista,%and%Eukarya
True
A.
False
B.
70.
A%diagram%of%the%three%domains%(bacteria,%archaea,%eukarya)%proceeding%from%the%last%universal%common%ancestor%would%show%
archaea%
Branching%off%the%Domain%Bacteria
A.
Branching%off%the%Domain%Eukarya
B.
As%the%original%cells%from%which%the%others%derived
C.
71.
Analysis%of%the%small%subunit%rRNAs%from%all%organisms%in%the%three%current%domains%suggest%that
The%prokaryotes,%archaea,%and%eukaryotes%are%not%related
A.
The%eukaryotes%rose%from%prokaryotes
B.
The%archaea%are%more%closely%related%to%bacteria%than%eukaryotes
C.
All%modern%and%extinct%organisms%on%earth%arose%from%a%common%ancestor
D.
72.
The%study%of%evolutionary%relationships%among%organisms%is%called
Genetics
A.
Biotechnology
B.
Phylogeny
C.
Taxonomy
D.
Recombinant%DNA
E.
73.
A%scientist%studying%the%sequence%of%nucleotides%in%the%rRNA%of%a%bacterial%species%is%workin%gon%
Recombinant%dna
A.
Nomenclature
B.
Determining%evolutionary%relatedness
C.
Bioremediation
D.
Determining%if%that%species%is%the%cause%of%a%new%disease
E.
74.
Trees%of%life%that%illustrate%the%phylogenetic%relationships%of%all%organisms%were%traditionally%based%on%_____:%newer%methods%for%
determining%phylogeny%rely%on%______.
Morphology;%virology
A.
Nucleic%acid%sequences;%morphology
B.
Nucleic%acid%sequences;%microbiomes
C.
Morphology;%nutritional%requirements
D.
75.
Differences/similarities%of%prokaryotic%and%eukaryotic%cells%(5):%
Prokaryotic
A.
Eukaryotic
B.
76.
What%are%the%three%isolation%methods?%Describe%them:
77.
What%is%a%colony?
78.
What%is%a%culture?
79.
What%are%the%5%medias?%Describe%them:%
80.
Positive%vs.%Negative%staining:
81.
What%is%gram%staining?
82.
List%other%stains:
83.
The%magnification%occurs%in%two%phases;%objective%lens%forms%the%_____%while%the%______%lens%forms%the%virtual%image:
84.
Results%when%the%visible%light%waves%pass%through%a%curved%lens;%the%light%experiences%refraction;%the%image%is%enlarged%to%a particular%
degree:%
85.
Describes%the%relative%efficiency%of%a%lens%in%bending%light%rays:
86.
The%ability%to%distinguish%two%adjacent%objects%or%points%from%one%another,%also%known%as%resolving%power
87.
88.
How%to%find%magnification%power?%(equation)
89.
A"patient"has"oral"lesions"that"look"like"salt"crystals"surrounded"by"a"red"halo."Which"disease"is"indicated?
rubella
A.
chickenpox
B.
measles
C.
Erysipelas
D.
90.
The"first"disease"for"which"immunization"was"perfected"was
small"pox
A.
polio
B.
ringworm
C.
measles
D.
91.
Which"of"the"following"types"of"warts"are"found"on"the"soles"of"the"feet?
flat"warts
A.
seed"warts
B.
genital"warts
C.
plantar"warts
D.
92.
As"a"group,"the"normal"microbial"residents"of"the"body"make"up"the"____
93.
Pyoderma"is"a"contagious"skin"disease"called"_____
94.
Four"types"of"folliculitis:"
95.
Characteristics"of"the"skin:
96.
The$entire$epidermis$is$replaced$every$___$to$___$days.
97.
Located$several$layers$below$the$stratum$corneum,$the$stratum$______$is$attached$to$the$dermis$and$is$the$
source$of$cells$that$make$up$the$epidermis.
98.
The$normal$biota$of$the$skin$must$be$capable$of$living$in$____$and$______$conditions.
99.
Maculopapular:
100.
Maculopapular$diseases:$
101.
Non-maculopapular$rash:$caused$by$microorganisms:
102.
Descriptions$and$symptoms,$how$they$are$transmitted,$if$they$are$caused$by$microbes/bacteria/viruses,$and$
the$treatment$of:$
Measles:
Impetigo:$
Cellulitis:
Chicken$pox:
Shingles:
Hand/foot/mouth:
Warts:
Anthrax:
Ringworm:$
Conjuctivitis:$
ANSWER$KEY:
D
1.
Virus, bacteria, algae, fungi, protozoa
2.
Bacteria archaea eukarya
3.
Archaea bacteria eukarya
4.
Archaea, bacteria, Protista, fungi, plantae, animale
5.
Inoculation: adding microorganisms to medium
6.
incubation: time to grow (media)
isolation: separating one cell from all others-forms colony (spread plate, streak plate, pour plate)
inspection/identification: what happened? What grew? Microscope
Bacteriology
6.
virology
phycology
protozoology
mycology
immunology
web of life is more accurate because of different species cross-breeding instead of genes simply being passed down such as a
tree of life.
7.
The water can get contaminated and pick up bacteria from the environment. Boiling it will kill most of the microorganisms in
the water system.
8.
D
9.
Endosymbiotic theory—eukaryotic cells originated from symbiotic prokaryotic cell that is small.
10.
prokaryotes living inside larger prokaryotic cells
Oil spills- microorganisms degrade organic contaminants in soil, groundwater, sludge, and solids. Use them as an energy
source
11.
C Prions
12.
Bacteria in the microbiome help us digest our food, regulate the immune system, protect against other bacteria(pathogens) that
cause disease, and produce vitamins including b vitamins.
13.
Bacteria and archaea have more complex structures than eukaryotic cells
14.
D
15.
Microbes do not have brains, they cannot intentionally cause human disease. They respond to stimuli and move toward
nutrients to survive
16.
C
17.
C
18.
Microorganisms are recognized using a binomial nomenclature using two words to denote a species. The first is genus and the
second is the species
19.
B
20.
E
21.
B
22.
C
23.
B
24.
B
25.
C
26.
C
27.
B
28.
B
29.
C
30.
A
31.
A
32.
D
33.
E
34.
A
35.
B
36.
A
37.
C
38.
A
39.
A
40.
B
41.
B
42.
C
43.
C
44.
A
45.
E
46.
C
47.
A
48.
B
49.
B
50.
E
51.
A
52.
A
53.
E
54.
E
55.
A
56.
B
57.
B
58.
B
59.
C
60.
C
61.
A
62.
A
63.
C
64.
B
65.
E
66.
D
67.
D
68.
E
69.
B, Bacteria, archaea, eukarya
70.
B
71.
D
72.
C
73.
C
74.
B
75.
Pro vs eu
Prokaryotic:
No nucleus
1.
No membrane bound organelles
2.
Smaller cells than eukaryotes
3.
Bacteria/archaea
4.
Binary fission: separation of. Parent cell into two new daughter cells
5.
Circular DNA
6.
1.
Eukaryotic:
Has nucleus
1.
Has membrane-bound organelles
2.
Larger cells than prokaryotic cells
3.
Eukarya: fungi, Protista, animale, Plantae
4.
Mitosis- division
5.
Linear DNA
6.
2.
76.
Streak, pour, spread plate
Streak plate: use Q tip-zig zag across media, turn 90 degrees, zig zag again. Topical
1.
Pour plate: microbe grows in agar and on top, inoculated directly into agar tubes, poured into Petri dish, allowed
to solidify
2.
Pipetted or dropped on top of agar evenly
3.
77.
A pile of microbes that is visible to the naked eye
78.
Culture is like a batch. For example, a farmer’s crop: the media is the soil and the culture is the flower in a pot
79.
Defined media: known inputs/output
80.
complex media: unknown, many types of bacteria. (Animal/vegetable Broth/agar)
enriched: complex organic 4 fast growth—fastidious. (Blood/serum/peptide)
selective: growth of certain microbes, others that are present do not grow
differential: grows all types of microorganisms-staining makes them visible
Positive: dye sticks to a specimen to give it color. Many cell parts are negatively charged, and it attracts positively charged
dyes
81.
negative: staining in which the dye does not stick to the specimen but the boundaries. Creates silhouette
Most universal diagnostic staining technique for BACTERIA
Separates microbes into categories: gram neg or positive
Basis for categorizing bacteria by taxonomy
82.
Stains
83.
-Differential: two diff colored dyes
-Simple: single dye, reveals shape/size/arrangement of cells
Real image; ocular lens
84.
Magnification
85.
Numerical aperture
86.
Resolution
87.
88.
4x- scanning lens
10x- low power lens
40x- high power lens
100x- oil immersion objective
Objective power(4x/10x/40x/100x) X eyepiece/ocular power(10x)=total magnification
89.
Ex: 10x X 4x= 40x total magnification
C: virus-Subacute sclerosing panencephalitis
90.
A
91.
D
92.
Microbiota
93.
Impetigo
94.
Pimples, styes, caruncles, carbuncles
95.
Contains a waterproof protein, largest organ, has a resident biota which is a living bacteria that fights off infections and bad
bacteria. Has keratin
96.
25-45 days
97.
Stratum basale
98.
Dry and salty
99.
Rash disease that is flat and slightly raised color bumps
100.
Measles, rubella, scarlet fever, roseola, parvo
101.
Impetigo, cellulitis, warts
102.
Measles: contagious infection, contagious and active virus for two hours
cause: VIRUS—morbillivirus
symptoms: flu-like symptoms, total body skin rash
transmission: infected nasal/throat secretion—sneezing/coughing/breathing
treatment: immunization prior to—immune globulin (antibiotics)
Impetigo: skin infection in young people
cause: BACTERIA—Staphylococcus aureus
Symptoms: itchy sores and blisters
transmission: contact with skin lesions/ objects infected with bacteria
treatment: antibiotics
Cellulitis: deep infection of skin
cause: BACTERIA—staphylococcus and streptococcus break in skin
Symptoms: reness, swelling, tenderness
transmission: isn’t from spread of person to person—infection of deeper layers of skin
treatment: prescription of an antibiotic: amputation, shock, death
Chicken pox: contagious skin disease
cause: VIRUS— varicella zoster virus (VZV)
Symptoms: spotty itchy rash, after 5-10 days spots dry out and crust over, and fall off
transmission: direct contact and aerosol, stays in body forever
treatment: controlling the itching with medication and creams
Shingles: painful rash of small blisters in defined area—months/years
cause: VIRUS— varicella zoster virus (VZV)
Symptoms: blisters in defined area.
transmission: direct contact with rash or breathing virus particles that get mixed in the air
treatment: no cure—vaccine to prevent
Hand/foot/mouth: mild contagious viral infection in young kids
cause: VIRUS— coxsackievirus
Symptoms: sores in mouth and rash on hands/feet
transmission: kissing, hugging , coughing, sneezing, poop, touching objects with virus. Fingers in eyes, nose or mouth
treatment: no direct treatment, fluids, paracetamol, quarantine, oral anesthetic
Warts: non-cancerous viral cell growths on hands and feet or genitals/face. Usually kids
cause: VIRUS—HPV
Symptoms: rough hard wart
transmission: infects cuts in the skin and mouths of kids. Picking and biting of warts spreads it
treatment: wash hands after touching. Blemycin injection, freezing off
Anthrax:
cause: BACTERIA—Bacillus anthraces
Symptoms: skin sores, vomiting and shock
transmission: touching or eating contaminated meat or inhaling the spores
treatment: antibacterial
Ringworm: fungi lives on skin hair and nails, when gets warm and moist it grows out of control
cause: FUNGUS—dermatophytes
Symptoms: itchiness, hair loss, rash shaped ling ring, hair falling out in patches
transmission: skin to skin
treatment: antifungal medication. Cream/lotion/powder for 2-4 weeks
Conjunctivitis: Pink eye: inflammation from infection or allergies
cause: VIRUS/BACTERIA/ALLERGY/IRRITANTS—Steptococcus pneumoniae/haemophiilus influenzae
Symptoms: red and inflamed, sticky discharge.
transmission: direct contact or object
treatment: antiviral drugs or antibiotics
Test%questions%
Monday,%June%3,%2024
12:53 PM

Partial preview of the text

Download Practice question for exam and more Exercises Microbiology in PDF only on Docsity!

Which of the following is an acellular microorganism lacking a nucleus?

  1. Bacterium
  2. helminth
  3. Protozoan
  4. Virus
  1. Name 5 types of microorganisms that we are studying
  2. What are the three domains?
  3. What are the 6 kingdoms?
  4. List the 5 I's of culturing and what they do:
  5. What are the 6 branches of microbiology?
  6. Defend the argument that a web of life is a more accurate representation of evolutionary relatedness than a tree of life. Often when there is a local water main break, a town will post an advisory to boil water before ingesting it. Identify the biological basis behind the effectiveness of this procedure in minimizing illness.
  1. Identify the process or environment in this list that is not affected by microorganisms.
    1. oxygen cycles
    2. recycling of dead organisms
    3. human health
    4. all of the above have microbial involvement
  2. Discuss the current view of the evolution of eukaryotic cells.
  3. Describe how microorganisms can accomplish bioremediation. Which of these organisms do not contain DNA? a. Helminths b. Bacteria c. Prions d. protozoan
  1. Summarize some important facets of the human microbiome.
  2. Suggest an argument for why eukaryotic cells have developed an enclosed nucleus unlike bacteria and archaea. Microbes are found in which habitat? a. human body b. earth’s crust c. Oceans d. all of the above
  1. Argue for or against this statement: Microbes intend to cause human disease. Which of the following processes can be the result of human manipulation of microbial genes? a. the central dogma b. natural selection c. Bioremediation d. abiogenesis

When a hypothesis has been thoroughly supported by long-term study and data, it is considered a. a law b. a speculation c. a theory d. proven

  1. Defend the use of complicated-sounding names for identifying microorganisms. Microorganisms are best defined as organisms that a. Can only be found growing in laboratories. b. Are too small to be seen with the unaided eye c. Lack a cell nucleus d. Cause human disease

Which of the following are not considered microorganisms? a. Fungi b. Protozoa c. Viruses d. Bacteria e. Mosquitos

  1. Helminths are ____. a. Molds b. Parasitic worms c. Protozoa d. Infectious particles Among the types of microorganisms, the _____are noncellular a. Protozoans b. Bacteria c. Viruses d. Helminths
  1. Studies of the immune response to an infection cause by microorganisms would be performed by a(n). _____. a. Hypersensitivity specialist b. Immunologist c. Geomicrobiologist d. Epidemiologist
  2. Which of the following pairs of career descriptions and work tasks are not correctly matched? a. Medical Microbiologist: identify cause of a bladder infection at a hospital lab b. Industrial microbiologist: manipulate bacterial strains to be less pathogenic c. Agricultural microbiologist: identify bacterial causes of crop disease d. Public health microbiologist: track the incidence of AIDS in a population
  3. A scientist who studies the influence of microbes in the formation of caves is called a(n) _____ a. Astrobiologist b. Epidemiologist c. Geomicrobiologist d. Immunologist
  4. The microorganisms that recycle nutrients by breaking down dead matter and wastes are called _____. a. Fermenters b. Eukaryotes c. Decomposers d. Pathogens e. Prokaryotes
  5. The majority of oxygen in earth's atmosphere is a product of photosynthesis by ______. a. Rain forests b. Microorganisms c. Green plants d. Agricultural lands
  6. The three cell types discussed: eukaryotes, archaea, and bacteria are all derived from a. Cells with a true nucleus b. The last universal common ancestor c. Photosynthetic bacteria d. Archaea The first cells appeared about ____ billion years ago. a. 5 b. 4. c. 3. d. 2 e. 1
  1. A hypothesis must be tested many times before it can be considered a theory a. True b. False
  2. Which area of biology states that living things undergo gradual structural and functional changes over long periods of time? a. Evolution b. Morphology c. Phylogeny d. Genetics e. Transformation
  3. When humans manipulate the genes of microorganisms, the process is called ______. a. Epidemiology b. Taxonomy c. Bioremediation d. Genetic engineering e. Immunology
  4. Which activity is an example of biotechnology? a. Bacteria in the soil secreting an antibiotic to kill competitors b. Public health officials monitoring diseases in a community c. Egyptians using moldy bread on wounds d. A microbiologist using the microscope to view bacteria e. Escherichia coli producing human insulin
  5. Which of the following is a traditional human use of microorganisms? a. Baking bread b. Cleaning up oil spills c. Treating water and sewage d. Mass-producing antibiotics
  6. Using microbes to detoxify a site contaminated with heavy metals is an example of ____. a. Biotechnology b. Bioremediation c. Decomposition d. Epidemiology e. Immunology Disease causing microorganism: A. Pathogen B. Decomposers C. Fermenters D. Bacteria E. Eukaryotes

The number one worldwide infections diseases are ____ A. AIDS-related diseases B. Malaria and other protozoan diseases C. Respiratory diseases D. Measles and other rash diseases E. Diarrheal diseases

Many chronic medical conditions have been found to be associated with microbial agents A. True B. False

The incidence of deaths from communicable disease is _____in the united states compared to the entire world. A. Less B. Greater C. About the same

In which way are bacteria and eukaryotes the same? A. Contain nucleus to hold DNA B. Contain ribosomes for protein synthesis C. Contain membrane-bound organelles D. Have a cell wall for rigidity

In which way are archaea and eukaryotes the same? A. Have a cell wall for rigidity B. Can use flagella for movement C. Contain mitochondria for energy production D. Contain membrane-bound organelles

  1. Organisms called parasites are ______. A. The decomposers in ecosystems B. Always viruses C. Always harmful to their host D. Free-living
  2. Which group of microorganisms is composed only of hereditary material wrapped in a protein covering? A. Yeasts B. Parasites C. Viruses D. Fungi E. Bacteria C Which of the following unique characteristic of viruses that distinguishes them from the other major groups of microorganisms? A. Cannot be seen without a microscope B. Contain genetic material C. Cause human disease D. Lack a nucleus E. Lack cell structure

Archaeal cells are about _____ bacterial cells A. Ten times smaller than B. The same size as C. Ten times larger than

Many chronic infections are caused by microbes that associate in communities termed A. Biofilms B. Virions C. Microbiota D. Sediments

Which of the following historical microbiologists is incorrectly paired with his contribution to the science> A. Francesco Redi: spontaneous generation with meat exposed to the air or covered with cloth B. Louis pasteur: demonstrated that anthrax was caused by a bacterium C. Joseph lister: promoted disinfecting hands and air prior to surgery D. Antonie van leeuwuenhook: made and used quality magnifying lenses to observe and record microorganisms

In the experiments constructed by Pasteur to disprove spontaneous generations, swan-necked flasks were used. Why was this shape of flask used in this experiment? A. The shape of the glass neck allowed the bacteria into the flask and then into the media, but the air could not enter. B. The glass necks needed to be open to the air, yet constructed so that bacteria would settle in the lowest part of the neck C. These flask shapes were the easiest and cheapest to produce Because the glass necks were stretched out, the heat used to sterilize the medium inside of the flask could not kill the bacteria in the neck.

D.

Koch's postulates are criteria used to establish that A. Microbes are found on dust particles B. A specific microbe should be classified in a specific kingdom C. Microbes can be used to clean up toxic spills D. A specific microbe is the cause of a specific disease

Which of the following is not a recent discovery that has had a huge impact on the understanding of microbiology? A. Restriction enzymes B. PCR technique C. Biofilms D. Small RNAs E. All are significant discoveries

The sum total of all the microbes in a certain environment is termed the ____. A. Microbiome B. Microbial niche C. Domain biofilm phylogeny

Which of the following is not a process in the scientific method? A. Systematic observation B. Development of a theory C. Laboratory experimentation D. Formulation of a hypothesis E. Belief in a preconceived idea

Experimentation A. First step in the scientific method B. Designed to support a hypothesis C. Provides a means to gather subjective data D. Designed to refute a hypothesis E. Provides a means to gather objective data

The scientific method includes all of the following except ____ A. Experimentation B. Hypothesis C. Publication D. Observation

The scientific method involves formulation a tentative explanation called the hypothesis, to account for what has been observed or measured. A. True B. False

Caring for patients infection with a new virus requires safety precautions for medical personnel. Choosing appropriate procedures is an example of a(n) ______ process. A. Pathogenic B. Deductive C. Hypothetical D. Inductive

Sterile refers to _____. A. Homogenized B. Absence of any life forms and viral particles C. Pathogen-free D. Pasteurized E. Absence of spores

Taxonomy does not involve ______. A. Classification B. A common name C. Nomenclature D. Identification

Which scientific field is involved in the identification, classification and naming of organisms? A. Nomenclature B. Epidemiology C. Taxonomy D. Phylogeny E. Pathology

The orderly arrangement of organisms into a hierarchy of taxa is called ______. A. Experimentation B. Biotechnology C. Classification D. Identification E. Nomenclature

Members of the same species share many more characteristics compared to those shared by members of the same kingdom A. True B. False

Which of the following is a taxon that contains all other taxa listed?? A. Family B. Genus C. Kingdom D. Species E. Phylum

Smallest and most significant taxon is a ______. A. Kingdom B. Phylum C. Species D. Family E. Genus

Select the correct descending taxonomic hierarchy (left to right) A. Class, phylum, order B. Family, genus, species C. Kingdom domain, phylum D. Family, order, class E. Genus, species, family

A recently developed mnemonic for remembering the taxonomic levels from domain to species is "dear king phillip came over for good spaghetti" What does the word cany represent in the taxonomic level A. Chain B. Culture C. Category D. Colony E. Class

Which of the following is a scientific name? A. Streptobacilli B. Gram-positive streptococcus C. Anthrax D. Streptococcus pyogenes

When assigning a scientific name to an organism, A. The species name is placed first B. The species name can be abbreviated C. Both genus and species names are italicized or underlined D. Both genus and species names are capitalized E. The species name is capitalized

Which scientific name is written correctly A. S.. aureus B. Staphylococcus aureus C. Staphylococcus Aureus D. staphylococcus aureus E. Staphylococcus aureus

The names of the three proposed domains are: Bacteria, Protista, and Eukarya A. True B. False

A diagram of the three domains (bacteria, archaea, eukarya) proceeding from the last universal common ancestor would show archaea A. Branching off the Domain Bacteria B. Branching off the Domain Eukarya C. As the original cells from which the others derived

Analysis of the small subunit rRNAs from all organisms in the three current domains suggest that A. The prokaryotes, archaea, and eukaryotes are not related B. The eukaryotes rose from prokaryotes C. The archaea are more closely related to bacteria than eukaryotes D. All modern and extinct organisms on earth arose from a common ancestor

The study of evolutionary relationships among organisms is called A. Genetics B. Biotechnology C. Phylogeny D. Taxonomy E. Recombinant DNA

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is workin gon A. Recombinant dna B. Nomenclature C. Determining evolutionary relatedness D. Bioremediation E. Determining if that species is the cause of a new disease

Trees of life that illustrate the phylogenetic relationships of all organisms were traditionally based on _____: newer methods for determining phylogeny rely on ______. A. Morphology; virology B. Nucleic acid sequences; morphology C. Nucleic acid sequences; microbiomes D. Morphology; nutritional requirements

Differences/similarities of prokaryotic and eukaryotic cells (5): A. Prokaryotic B. Eukaryotic

  1. What are the three isolation methods? Describe them:
  2. What is a colony?
  3. What is a culture?
  4. What are the 5 medias? Describe them:
  5. Positive vs. Negative staining:
  6. What is gram staining?
  7. List other stains:
  8. The magnification occurs in two phases; objective lens forms the _____ while the ______ lens forms the virtual image: Results when the visible light waves pass through a curved lens; the light experiences refraction; the image is enlarged to a particular degree:
  1. Describes the relative efficiency of a lens in bending light rays:
  2. The ability to distinguish two adjacent objects or points from one another, also known as resolving power
  3. How to find magnification power? (equation)

A patient has oral lesions that look like salt crystals surrounded by a red halo. Which disease is indicated?

A. rubella

B. chickenpox

C. measles

D. Erysipelas

The first disease for which immunization was perfected was

A. small pox

B. polio

C. ringworm

D. measles

Which of the following types of warts are found on the soles of the feet?

A. flat warts

B. seed warts

C. genital warts

D. plantar warts

93. As a group, the normal microbial residents of the body make up the ____

94. Pyoderma is a contagious skin disease called _____

95. Four types of folliculitis:

96. Characteristics of the skin:

  1. The entire epidermis is replaced every ___ to ___ days. Located several layers below the stratum corneum, the stratum ______ is attached to the dermis and is the source of cells that make up the epidermis.
  1. The normal biota of the skin must be capable of living in ____ and ______ conditions.
  2. Maculopapular:
  3. Maculopapular diseases:
  4. Non-maculopapular rash: caused by microorganisms: Descriptions and symptoms, how they are transmitted, if they are caused by microbes/bacteria/viruses, and the treatment of: Measles: Impetigo: Cellulitis: Chicken pox: Shingles: Hand/foot/mouth: Warts: Anthrax: Ringworm: Conjuctivitis: ANSWER KEY:
  5. D
  6. Virus, bacteria, algae, fungi, protozoa
  7. Bacteria archaea eukarya
  8. Archaea bacteria eukarya
  9. Archaea, bacteria, Protista, fungi, plantae, animale
  10. Inoculation: adding microorganisms to medium incubation: time to grow (media) isolation: separating one cell from all others-forms colony (spread plate, streak plate, pour plate) inspection/identification: what happened? What grew? Microscope
  11. Bacteriology virology phycology protozoology mycology immunology web of life is more accurate because of different species cross-breeding instead of genes simply being passed down such as a tree of life.

The water can get contaminated and pick up bacteria from the environment. Boiling it will kill most of the microorganisms in the water system.

9. D

  1. Endosymbiotic theory—eukaryotic cells originated from symbiotic prokaryotic cell that is small. prokaryotes living inside larger prokaryotic cells Oil spills- microorganisms degrade organic contaminants in soil, groundwater, sludge, and solids. Use them as an energy source
  1. C Prions Bacteria in the microbiome help us digest our food, regulate the immune system, protect against other bacteria(pathogens) that cause disease, and produce vitamins including b vitamins.
  1. Bacteria and archaea have more complex structures than eukaryotic cells
  2. D Microbes do not have brains, they cannot intentionally cause human disease. They respond to stimuli and move toward nutrients to survive

17. C

18. C

Microorganisms are recognized using a binomial nomenclature using two words to denote a species. The first is genus and the second is the species

20. B

21. E

22. B

23. C

24. B

25. B

26. C

27. C

28. B

29. B

30. C

31. A

32. A

33. D

34. E

35. A

36. B

37. A

38. C

39. A

40. A

41. B

42. B

43. C

44. C

45. A

46. E

47. C

48. A

49. B

50. B

51. E

52. A

53. A

54. E

55. E

56. A

57. B

58. B

59. B

60. C

61. C

62. A

63. A

64. C

65. B

66. E

67. D

68. D

69. E

  1. B, Bacteria, archaea, eukarya
  2. B
  3. D
  4. C
  5. C
  6. B Pro vs eu Prokaryotic: 1. No nucleus 2. No membrane bound organelles 3. Smaller cells than eukaryotes 4. Bacteria/archaea 5. Binary fission: separation of. Parent cell into two new daughter cells 6. Circular DNA

Eukaryotic:

  1. Has nucleus
  2. Has membrane-bound organelles
  3. Larger cells than prokaryotic cells
  4. Eukarya: fungi, Protista, animale, Plantae
  5. Mitosis- division
  6. Linear DNA

Streak, pour, spread plate

  1. Streak plate: use Q tip-zig zag across media, turn 90 degrees, zig zag again. Topical Pour plate: microbe grows in agar and on top, inoculated directly into agar tubes, poured into Petri dish, allowed to solidify
  2. Pipetted or dropped on top of agar evenly
  1. A pile of microbes that is visible to the naked eye
  2. Culture is like a batch. For example, a farmer’s crop: the media is the soil and the culture is the flower in a pot
  3. Defined media: known inputs/output complex media: unknown, many types of bacteria. (Animal/vegetable Broth/agar) enriched: complex organic 4 fast growth—fastidious. (Blood/serum/peptide) selective: growth of certain microbes, others that are present do not grow differential: grows all types of microorganisms-staining makes them visible Positive: dye sticks to a specimen to give it color. Many cell parts are negatively charged, and it attracts positively charged dyes

negative: staining in which the dye does not stick to the specimen but the boundaries. Creates silhouette Most universal diagnostic staining technique for BACTERIA

  • Separates microbes into categories: gram neg or positive
  • Basis for categorizing bacteria by taxonomy
  1. Stains
    • Differential: two diff colored dyes
    • Simple: single dye, reveals shape/size/arrangement of cells
  2. Real image; ocular lens
  3. Magnification
  4. Numerical aperture
  5. Resolution
    • 4x- scanning lens
    • 10x- low power lens
    • 40x- high power lens
    • 100x- oil immersion objective
  1. Objective power(4x/10x/40x/100x) X eyepiece/ocular power(10x)=total magnification Ex: 10x X 4x= 40x total magnification
  2. C: virus-Subacute sclerosing panencephalitis
  3. A
  4. D
  5. Microbiota
  6. Impetigo
  7. Pimples, styes, caruncles, carbuncles Contains a waterproof protein, largest organ, has a resident biota which is a living bacteria that fights off infections and bad bacteria. Has keratin
  1. 25 - 45 days
  2. Stratum basale
  3. Dry and salty
  4. Rash disease that is flat and slightly raised color bumps
  5. Measles, rubella, scarlet fever, roseola, parvo
  6. Impetigo, cellulitis, warts Measles : contagious infection, contagious and active virus for two hours cause: VIRUS—morbillivirus symptoms: flu-like symptoms, total body skin rash transmission: infected nasal/throat secretion—sneezing/coughing/breathing treatment: immunization prior to—immune globulin (antibiotics) Impetigo: skin infection in young people cause: BACTERIA—Staphylococcus aureus Symptoms: itchy sores and blisters transmission: contact with skin lesions/ objects infected with bacteria treatment: antibiotics Cellulitis: deep infection of skin cause: BACTERIA—staphylococcus and streptococcus break in skin Symptoms: reness, swelling, tenderness transmission: isn’t from spread of person to person—infection of deeper layers of skin treatment: prescription of an antibiotic: amputation, shock, death Chicken pox: contagious skin disease cause: VIRUS— varicella zoster virus (VZV) Symptoms: spotty itchy rash, after 5-10 days spots dry out and crust over, and fall off transmission: direct contact and aerosol, stays in body forever treatment: controlling the itching with medication and creams Shingles: painful rash of small blisters in defined area—months/years cause: VIRUS— varicella zoster virus (VZV) Symptoms: blisters in defined area. transmission: direct contact with rash or breathing virus particles that get mixed in the air treatment: no cure—vaccine to prevent Hand/foot/mouth: mild contagious viral infection in young kids cause: VIRUS— coxsackievirus Symptoms: sores in mouth and rash on hands/feet transmission: kissing, hugging , coughing, sneezing, poop, touching objects with virus. Fingers in eyes, nose or mouth treatment: no direct treatment, fluids, paracetamol, quarantine, oral anesthetic Warts: non-cancerous viral cell growths on hands and feet or genitals/face. Usually kids cause: VIRUS—HPV Symptoms: rough hard wart transmission: infects cuts in the skin and mouths of kids. Picking and biting of warts spreads it treatment: wash hands after touching. Blemycin injection, freezing off Anthrax: cause: BACTERIA—Bacillus anthraces Symptoms: skin sores, vomiting and shock transmission: touching or eating contaminated meat or inhaling the spores treatment: antibacterial Ringworm: fungi lives on skin hair and nails, when gets warm and moist it grows out of control cause: FUNGUS—dermatophytes Symptoms: itchiness, hair loss, rash shaped ling ring, hair falling out in patches transmission: skin to skin treatment: antifungal medication. Cream/lotion/powder for 2-4 weeks Conjunctivitis: Pink eye: inflammation from infection or allergies cause: VIRUS/BACTERIA/ALLERGY/IRRITANTS—Steptococcus pneumoniae/haemophiilus influenzae Symptoms: red and inflamed, sticky discharge. transmission: direct contact or object treatment: antiviral drugs or antibiotics

Test questions

Monday, June 3, 2024 12:53 PM