Download MICROBIOLOGY QUESTIONS CHAPTER 1-12 (MIDTERM) WITH CORRECT AND VERIFIED ANSWERS - WESTERN and more Exams Nursing in PDF only on Docsity!
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- Microorganisms are involved in each of the following processes EXCEPT A) infection. B) decomposition of organic material. C) O2 production. D) food production. E) smog production. - correct answers E) smog production
- Each of the following organisms would be considered a microbe EXCEPT A) yeast. B) protozoan. C) bacterium. D) mushroom. E) virus - correct answers D) Mushroom
- The term used to describe a disease-causing microorganism is A) microbe. B) bacterium.
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C) virus. D) pathogen. - correct answers D) pathogen
- Common commercial benefits of microorganisms include synthesis of A) riboflavin. B) acetone. C) insulin. D) aspirin. E) riboflavin, acetone and insulin. - correct answers E) riboflavin, acetone and insulin.
- What factors contribute to the rising incidence of antibiotic resistance? A) overuse of the specific drugs B) misuse of the specific drugs C) random mutations in bacterial genomes D) random mutations, overuse and misuse of specific drugs E) overuse and misuse of specific drugs - correct answers D) random mutations, overuse and misuse of specific drugs
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C) envelope D) chemical reactions E) protein coat - correct answers A) organelles
- Protozoan motility structures include A) cilia. B) flagella. C) pseudopods. D) cilia and pseudopods only. E) cilia, flagella, and pseudopods. - correct answers E) cilia, flagella, and pseudopods.
- Viruses are not considered living organisms because they A) cannot reproduce by themselves. B) are structurally very simple. C) can only be visualized using an electron microscope. D) are typically associated with disease. E) are ubiquitous in nature. - correct answers A) cannot reproduce by themselves.
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- Microbes that live stably in and on the human body are called the A) transient microbiota. B) human microbiome. C) pathogenic microorganisms. D) virulent microorganisms. - correct answers B) human microbiome.
- Which of the following is NOT a domain in the three-domain system? A) animalia B) archaea C) bacteria D) eukarya - correct answers A) animalia
- Archaea differ from bacteria in that archaea A) have cell walls composed of substances other than peptidoglycan. B) lack nuclei. C) use organic compounds for food.
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- Mycology is the study of A) mycoplasma. B) mushrooms. C) protozoa. D) molds. E) molds, yeast, and mushrooms. - correct answers E) molds, yeast, and mushrooms.
- The first step for directly linking a microbe to a specific disease according to Koch's postulates is to A) culture the blood or other body fluid from a diseased animal using nutrient medium. B) inject a sample of blood or other body fluid from a diseased animal into a healthy animal. C) obtain a sample of blood or other body fluid from a diseased animal. D) compare the blood of a sick animal to blood obtained from a healthy animal. E) isolate microbes from the blood of healthy animals. - correct answers C) obtain a sample of blood or other body fluid from a diseased animal.
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- In which of the following situations would Koch's postulates be utilized? A) determination of the cause of a new emerging disease by scientists studying disease transmission B) development of a new antibiotic in a pharmaceutical lab C) determination of the cause of cancer in a patient D) formulation of a vaccine against a new pathogen in a genetic engineering lab E) whenever the scientific method is used to investigate a microbiological problem - correct answers A) determination of the cause of a new emerging disease by scientists studying disease transmission
- Fungal infections are studied by A) virologists. B) bacteriologists. C) parasitologists. D) mycologists. E) herpetologists. - correct answers D) mycologists.
- When our bodies overcome the offensive tactics of a particular microorganism, this is
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B) RNA replication. C) protein synthesis. D) enzyme function. E) how genetic information directs protein synthesis. - correct answers E) how genetic information directs protein synthesis.
- Microorganisms are essential to our life. Each of the following is an example of a beneficial function of microorganisms EXCEPT A) alternative fuel production. B) bioremediation. C) gene therapy. D) agriculture. E) increased number of illnesses. - correct answers E) increased number of illnesses.
- The major food producers for other living organisms is/are A) higher plants. B) cyanobacteria.
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C) algae. D) higher plants and algae. E) higher plants, cyanobacteria, and algae. - correct answers E) higher plants, cyanobacteria, and algae.
- Gene therapy is currently used to treat all of the following diseases EXCEPT A) severe combined immunodeficiency disease (SCID). B) Duchenne's muscular dystrophy. C) cystic fibrosis. D) LDL-receptor d E) colon cancer. - correct answers E) colon cancer.
- Recombinant DNA technology has become an increasingly important part of our life. It is used for all of the following EXCEPT A) vaccine production. B) enhancing food longevity. C) synthesis of water.
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C) Biofilms in your body protect mucous membranes from harmful microbes. D) Biofilms on medical devices cause infections. E) Biofilms on rocks provide food for animal life. - correct answers A) Compared to free-living bacteria, biofilms are more sensitive to antibiotics.
- Development of emerging infectious disease can be a result of all of the following EXCEPT A) microbial mutation. B) modern transportation. C) use of genetically modified foods. D) changes in the environment. E) overuse of antibiotics. - correct answers C) use of genetically modified foods.
- All of the following are true concerning emerging infectious diseases EXCEPT A) they always involve sporadic cases in endemic areas. B) they include newly described infectious agents. C) known pathogens develop evolutionary changes. D) known diseases spread to new regions or populations.
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E) they result from human exposure to a pathogen due to ecological changes. - correct answers A) they always involve sporadic cases in endemic areas.
- Microorganisms are beneficial to humans in all of the following ways EXCEPT A) marine and freshwater organisms form the basis of the food web. B) soil microorganisms break down matter. C) some microorganisms live symbiotically with plants and transform nitrogen gas into organic compounds. D) Pseudomonas, molds and other microorganisms break down lettuce and strawberries at refrigeration temperatures. E) Fermentin - correct answers D) Pseudomonas, molds and other microorganisms break down lettuce and strawberries at refrigeration temperatures.
- From the list below, which would NOT be considered an emerging pathogen? A) Zika virus B) Avian influenza
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- Which of the following statements is FALSE? A) Salts readily dissolve in water. B) Water molecules are formed by hydrolysis. C) Water freezes from the top down. D) Water is formed as a part of a dehydration synthesis reaction. E) Water is a polar molecule. - correct answers B) Water molecules are formed by hydrolysis.
- Which of the following is the type of bond holding K+ and I- ions in KI? A) ionic bond B) covalent bond C) hydrogen bond - correct answers A) ionic bond
- Which of the following is the type of bond between molecules of water in a beaker of water? A) ionic bond B) covalent bond
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C) hydrogen bond - correct answers C) hydrogen bond
- What is the type of bond holding hydrogen and oxygen atoms together in a single H2O molecule? A) ionic bond B) covalent bond C) hydrogen bond - correct answers B) covalent bond
- Which of the following statements regarding protein structure is FALSE? A) The primary structure is formed by covalent bonding between amino acid subunits. B) Secondary structures are formed only from hydrogen bonds. C) Tertiary structures are formed only from covalent bonds. D) Quaternary structures involved multiple polypeptides. - correct answers C) Tertiary structures are formed only from covalent bonds.
- What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron? A) ionic bond
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A) carbohydrate B) lipid C) protein D) nucleic acid - correct answers D) nucleic acid
- What do genes consist of? A) carbohydrates B) lipids C) proteins D) nucleic acids - correct answers D) nucleic acids
- Which molecule is composed of a chain of amino acids? A) carbohydrate B) lipid C) protein D) nucleic acid - correct answers C) protein
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- Which are the primary molecules making up plasma membranes in cells? A) carbohydrates B) lipids C) proteins D) nucleic acids - correct answers B) lipids
- The antimicrobial drug imidazole inhibits sterol synthesis. This would most likely interfere with A) bacterial cell walls. B) fungal cell walls. C) eukaryotic plasma membranes. D) prokaryotic plasma membranes. E) genes. - correct answers C) eukaryotic plasma membranes.
- An E. coli culture that has been growing at 37°C is moved to 25°C. Which of the following changes must be made in its plasma membrane to help it cope with the decrease in temperature?
