1. Which of the following is NOT an infectious organism?
A. Prion
B. Protein
C. Viroid
D. Virus
2. In the virus in Figure 18.1, what is the function of the structure labeled B?
A. Attachment
B. Replication
C. Conjugation
D. Plasmid exchange
3. In the virus in Figure 18.1, what is the region labeled A?
A. Capsid
B. Cell wall
C. Envelope
D. Plasma membrane
4. Prokaryotes play important roles in ecosystems in all of the following ways EXCEPT:
A. Producing carbon dioxide through photosynthesis
B. Composting and breaking down pollutants
C. Recycling carbon through the ecosystem
D. Recycling nitrogen through the ecosystem
5. Genetic material of a virus combining with a host cell's DNA occurs during
A. lytic infection.
B. lysogenic infection.
C. conjugation.
D. plasmid exchange.
6. In the mutual symbiosis relationship, bacteria living on our skin are given a place to live and nutrients to eat. In return, bacteria
A. attack infecting viruses
B. prevent harmful bacteria from growing on our skin
C. infect their host cells
D. block nutrient absorption from their host cells
7. Which of the following organisms are capable of living in extreme environments?
A. Obligate aerobes
B. Archaea
C. Facultative aerobes
D. Viroids
8. In the bacterium in Figure 18.2, what is the function of the structure labeled B?
A. Attachment
B. Movement.
C. Protection
D. Replication
9. What is the shape of the bacterium in Figure 18.2?
A. Bacilli
B. Cocci
C. Spirochete
D. Helical
10. Bacteria that are able to fix atmospheric nitrogen are important to the environment because
A. atmospheric nitrogen is toxic.
B. they make nitrogen available to plants in a usable form.
C. bioremediation would not be possible without them.
D. their niche would otherwise be filled with pathogens.
11. Antibiotics must not be used to treat most colds because most colds are caused by
A. drug-resistant bacteria.
B. cold temperatures.
C. influenza viruses.
D. viral pathogens.
12. Which of the following reproduces by binary fission?
A. Proembryotes
B. Plasmoids
C. Plasma
D. Prokaryotes
13. Tail fibers are used to attach to a bacterial cell by which of the following infectious agents?
A. Capsid
B. DNA
C. Bacteriophage
D. Fungus
14. Bacteriophages are
A. bacteria that infect viruses.
B. bacteria that infect phages.
C. viruses that infect bacteria.
D. viruses that infect other viruses.
15. In a lysogenic infection, the host cell will receive foreign DNA. Which type of infectious agent can produce a lysogenic infection?
A. Virus
B. Bacteria
C. Fungus
D. Prion
16. In HIV infection, the patient is considered to have AIDS when
A. a viral RNA genome is copied into DNA.
B. viral genetic material is incorporated into the host DNA.
C. large numbers of white blood cells have been killed.
D. the virus mutates from HIV to AIDS.
17. A severe drought affects an environment, but an endospore survives. It is most likely to have survived because
A. it invaded a larger organism.
B. it burrowed deep into the ground.
C. it formed a thick wall to protect itself.
D. it used a plasmid membrane.
18. How do people benefit from having bacteria in the digestive system?
A. The bacteria prevent harmful microbes from colonizing
B. The bacteria make beneficial vitamins
C. The bacteria aid in food digestion
D. All of the above
19. Antibiotics aid in defeating a bacterial infection by
A. creating endospores or slowing toxins.
B. removing toxins and slowing plasmids.
C. killing bacteria or slowing their growth.
D. killing bacteria and creating endospores.
20. Drug resistance in bacteria can be caused by
A. bacterial mutations.
B. overuse of antibiotics.
C. misuse of antibiotics.
D. All of the above
21. Which of the following is NOT a way bacteria can cause disease?
A. Injecting DNA into the host cell
B. Attacking the cells of tissues they invade
C. Transporting poisons through the blood
D. Transporting toxins through the blood
22. If a person stops taking antibiotics before the prescription is complete, this could help bacteria
A. die off
B. evolve
C. inject DNA
D. make toxins
23. Which of the following situations increases the likelihood of making bacteria resistant to antibiotics?
A. Using antibiotics to treat bacterial infections
B. Using vaccines to prevent viral infections
C. Using vaccines to prevent bacterial infections
D. Using antibiotics to treat viral infections
24. Which of the following is NOT a factor involved in producing multidrug resistant 鈥渟uperbugs鈥?
A. Mass vaccination programs
B. Feeding healthy farm animals antibiotics
C. Underuse of a lol we could help you buddy, but its a long list :P
-moral of the story do your own homework...... as interesting as this is i am not about to do your homework for you. |
