Affiliate Marketing Secrets

1. Which of the following infectious organisms is the smallest?
A) Prion
B) Viroid
C) Virus
D) Bacteria
2. All of the following are reasons why “superbugs”have become a serious health issue EXCEPT:
A) antibiotic overuse.
B) antiobiotic shortages.
C) antibiotic underuse.
D) antibiotic misuse.
3. What kind of cell does a phage infect?
A) Mammalian cell
B) Plant cell
C) Eukaryotic cell
D) Bacterial cell
4. All of the following are ways that bacteria benefit ecosystems EXCEPT:
A) Recycle hydrogen through the ecosystem
B) Recycle carbon through the ecosystem
C) Produce oxygen through photosynthesis
D) Produce carbon dioxide through photosynthesis
5. In a lysogenic infection, once the DNA of the virus is incorporated into the bacterial DNA, the DNA is
called a
A) prion.
B) viroid.
C) prophage.
D) plasmid.
6. The normal bacteria present on our skin are beneficial because
A) they fill the niche so harmful bacteria cannot grow there.
B) they can not cause diseases in our bodies.
C) they open the niche for harmful bacteria to grow.
D) they cause minor diseases that are easily treated.
7. A bacteria that is capable of living in an environment with or without oxygen is called a(n)
A) obligate anaerobe.
B) obligate aerobe.
C) facultative anaerobe.
D) facultative aerobe.
8. In the bacterium in Figure 18.2, what is the structure labeled B?
A) Pili
B) DNA
C) Plasmid
D) Flagellum
9. In the bacterium in Figure 18.2, what is the structure labeled C?
A) Pili
B) Cell wall
C) Plasmid
D) Flagellum
10. Bioremediation uses microbes to
A) produce carbohydrates.
B) clean up pollutants.
C) convert atmospheric nitrogen.
D) break down food.
11. When used properly, antibiotics can fight
A) viral infections.
B) fungal infections.
C) HIV infections.
D) bacterial infections.
12. Prokaryotes provide ________ to humans and other organisms
A) habitats.
B) antibiotics.
C) nutrients
D) endocytosis
13. An infectious particle made of a strand of nucleic acid surrounded by protein is a
A) bacteria.
B) virus.
C) viroid.
D) prion.
14. Viruses that infect bacteria are called
A) bacteriophages.
B) helical viruses.
C) polyhedral viruses.
D) prophages.
15. Which of the following type of infectious agent can cause an infected host to cell burst in a lytic infection?
A) Bacteria
B) Fungus
C) Prion
D) Virus
16. When HIV causes a lysogenic infection, it can remain dormant for years. When it becomes a lytic
infection, it
A) causes no symptoms.
B) destroys white blood cells.
C) mutates infrequently.
D) can no longer cause AIDS.
17. An endospore may survive a drought because it is protected by a
A) hollow bridge.
B) thick wall.
C) plasmid replication.
D) plasma membrane.
18. How do humans benefit from bacteria living in the digestive system?
A) Bacteria adapt to fluctuations in temperature.
B) Bacteria get food and a place to live.
C) Bacteria produce vitamins humans need.
D) Humans make nitrogen the bacteria can use.
19. Chemicals that kill bacteria or slow their growth are called
A) toxins.
B) antibiotics.
C) endospores.
D) plasmids.
20. Misuse of antibiotics can lead to multidrug resistance in
A) humans.
B) bacteria.
C) viruses.
D) antibiotics.
21. Bacteria can cause disease to a host by all of the following EXCEPT:
A) Invading tissues and attacking cells.
B) Making poisons that are transported through blood.
C) Producing antibodies to make a vaccine ineffective.
D) Making toxins that are carried by blood.
22. A person is given antibiotics to combat pneumonia. After two days, the person feels better and decides not to continue taking the medicine. This could help the bacteria evolve because it
A) allows bacteria that were somewhat resistant to live.
B) introduces new bacteria into the system.
C) increases the number of antibiotics prescribed.
D) decreases the amount of bacteria that survive.
23. Using antibiotics when bacteria are not causing an illness may make some bacteria
A) avoid the organism beng treated.
B) become extinct due to overexposure.
C) resisant to the antibiotics used.
D) produce fewer toxins that usual.
24. Which of the following is NOT a factor in bacteria becoming antibiotic resistant?
A) misuse
B) animal use
C) overuse
D) underuse
25. Prokaryotes benefit plants by
A) providing antibiotic resistance to roots
B) converting nitrogen into a useable form
C) producing carbon dioxide for photosynthesis
D) producing endospores for survival