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MCAT Biology Practice Test 8: Viruses and Prokaryotes
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MCAT Biology Practice Test 8: Viruses and Prokaryotes
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25 Questions

1. The presence of which gas would be toxic for a facultative anaerobe?
2. Which of the following best describes how halogens provide disinfection?
3. If you put hydrogen peroxide on a loopful of bacteria and bubbles were given off, what would you probably conclude about the organism?
4. What do viroids and multipartite viruses have in common?
5. Which of the following statements is true concerning transformation?
6. If you discovered an infectious agent that lacked both RNA and DNA, what would you suspect?
7. The term 'pBR322' refers to a tool used in the genetic engineering of bacteria and is classified as a
8. Bacterial genetic engineers utilize generalized transduction by
9. Bacteria can frequently acquire antibiotic resistance by horizontal transfer. The most common mechanism of this acquisition is by
10. Replica plating refers to a technique used
11. Similarities between viruses and rickettsia include
12. Eukaryotic cells divide by mitosis. Bacteria divide
13. Which of the following best describes the function of RNA polymerase?
14. Some bacteria can form endospores. Which of the following is the best description of these structures?
15. Bacteriophages have been used as a form of 'antibiotic' in protecting humans from bacterial infections. How is it that these viruses do not cause human disease?
16. An infectious agent presenting with a complex protein structure, often incorporating base plates or tail fibers, best describes
17. The staining technique used in a microbiology lab to differentiate the two major types of bacterial cell walls is the
18. Of the following, which is NOT descriptive of all viruses?
19. The Shine-Dalgarno sequence is found
20. Genital warts are caused by a
21. If you discovered a mutant bacterium that could utilize DNA as a sole carbon source, you would
22. Bacterial cultures progress through four phases of growth when retained within a closed system. At which phase would you expect the greatest ratio of dead to living cells?
23. A viral genome that can be translated by reading the template strand in both the 5′ to 3′ and the 3′ to 5′ directions indicates
24. Bacteria and fungi are alike in that
25. The type of mobile genetic element that has a great similarity to certain types of viruses is

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