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Ch 1 3 19. Detailed practice questions for test. Really helped me with my studies
Typology: Exercises
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Which of the following is an acellular microorganism lacking a nucleus?
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
Which of the following are not considered microorganisms? a. Fungi b. Protozoa c. Viruses d. Bacteria e. Mosquitos
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
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.
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
The water can get contaminated and pick up bacteria from the environment. Boiling it will kill most of the microorganisms in the water system.
Microorganisms are recognized using a binomial nomenclature using two words to denote a species. The first is genus and the second is the species
Eukaryotic:
Streak, pour, spread plate
negative: staining in which the dye does not stick to the specimen but the boundaries. Creates silhouette Most universal diagnostic staining technique for BACTERIA
Monday, June 3, 2024 12:53 PM