Question 1

What feature enables the paramecium to move?

Accepted Answer

A)   cilia
B)   contractile vacuole
C)   flagella
D)   nucleus
E)   pseudopodiaF) C) and E)
G) None of the above A

Question 2

Cyanobacteria are important producers, more specifically called

Accepted Answer

A)   photoautotrophs.
B)   saprotrophs.
C)   chemoautotrophs.
D)   saproautotrophs.
E)   photoheterotrophs.F) A) and E)
G) A) and D)

Question 3

Which of these is mismatched?

Accepted Answer

A)   Paramecium - ciliate
B)   Chlamydomonas - green alga
C)   Plasmodium - sporozoan
D)   Giardia - zooflagellate
E)   Salmonella - amoebaF) None of the above
G) C) and D) E

Question 4

Penicillin is an antibiotic drug that interferes with cell wall synthesis in bacteria, eventually resulting in cell death. What effect would you predict if you applied penicillin to archaea?

Accepted Answer

A)   The archaea would die due to the weakening of their cell walls.
B)   The archaea would not be affected, since they do not contain peptidoglycan.
C)   The archaea would not be affected, since none of the archaea have cell walls.
D)   The archaea would die due to their inability to synthesize protein for their cell walls.
E)   None of the choices are correct.F) C) and D)
G) A) and B)

Question 5

In which type of environment would you be most likely to find methanogenic archaea?

Accepted Answer

A)   hot, acidic
B)   high salt concentration
C)   anaerobic
D)   aerobic
E)   dryF) A) and B)
G) A) and C)

Question 6

Citrus tristeza virus CTV)  damages and kills susceptible citrus trees around the world. It can be spread by grafting of infected plants, and by aphids, insects with piercing mouthparts that they use to suck fluid from plants. Which of the following would not limit the spread of CTV?

Accepted Answer

A)   use of insecticides to control the aphids
B)   destruction of infected plants
C)   production of transgenic citrus lines using genes from resistant plants
D)   quarantine of fields with infected plants
E)   application of antibiotic drugs to citrus plantsF) A) and B)
G) A) and C) E

Question 7

Which species are representatives of the green algae?

Accepted Answer

A)   diatoms, Volvox, and Spirogyra
B)   coralline algae, Volvox, and Spirogyra
C)   Chlamydomonas, Volvox, and Spirogyra
D)   Chlamydomonas, Volvox, and coralline
E)   diatoms, Chlamydomonas, and VolvoxF) None of the above
G) All of the above

Question 8

Which means of genetic recombination in bacteria often make use of pili?

Accepted Answer

A)   transformation
B)   transduction
C)   conjugation
D)   both transformation and transduction
E)   translocationF) A) and D)
G) D) and E)

Question 9

What structure enables a plant virus to move from one plant cell to the next?

Accepted Answer

A)   plasmodesmata
B)   bacteriophages
C)   capsids
D)   insect vectors
E)   recognition proteinsF) A) and E)
G) All of the above

Question 10

Which of the following groups contains at least some members that have cell walls?

Accepted Answer

A)   protists only
B)   bacteria only
C)   archaea only
D)   prokaryotes only
E)   protists, bacteria, and archaeaF) A) and B)
G) A) and C)

Question 11

Archaea

Accepted Answer

A)   have plasma membranes but lack cell walls.
B)   have plasma membranes, and most have cell walls.
C)   lack plasma membranes, but most have cell walls.
D)   have neither plasma membranes nor cell walls.
E)   have double plasma membranes and no cell walls.F) A) and E)
G) A) and D)

Question 12

Which of the following is not a characteristic of Paramecium?

Accepted Answer

A)   a macronucleus produces mRNA and directs metabolic functions
B)   motile with cilia
C)   a micronucleus functions in reproduction
D)   engulfs prey with pseudopods
E)   chemoheterotrophicF) A) and B)
G) All of the above

Question 13

As a result of drinking contaminated water, a patient contracts amoebic dysentery. Would an antibiotic drug that inhibits peptidoglycan synthesis be beneficial in treating the amoeba infection?

Accepted Answer

A)   Yes, because it would weaken the cell walls of the amoebas and cause them to die.
B)   No, because amoeba are not bacteria and do not have peptidoglycan.
C)   Yes, because antibiotics are always beneficial in treating infectious diseases.
D)   No, because the cell walls of the amoeba that causes dysentery contain calcium carbonate, not peptidoglycan.
E)   Yes, because the amoeba would not be able to reproduce.F) A) and E)
G) C) and D)

Question 14

Retroviruses

Accepted Answer

A)   contain DNA.
B)   contain the enzyme reverse transcriptase.
C)   produce RNA from DNA.
D)   only invade plants.
E)   produce protein directly from DNA.F) B) and C)
G) B) and D)

Question 15

Bacteria that secrete digestive enzymes into their surroundings in order to decompose nonliving organic matter are called

Accepted Answer

A)   chemoautotrophs.
B)   symbiotes.
C)   saprotrophs.
D)   parasites.
E)   photoautotrophs.F) A) and B)
G) A) and C)

Question 16

Which statement about slime molds and water molds is incorrect?

Accepted Answer

A)   Both are eukaryotes.
B)   Both have flagellated cells at some time in their life cycles.
C)   Both form spores.
D)   Both are chemoheterotrophs.
E)   Both are fungi.F) B) and D)
G) A) and C)

Question 17

Algae are commonly grouped by their type of

Accepted Answer

A)   motility.
B)   sexual reproduction.
C)   pigment.
D)   habitat.
E)   feeding.F) B) and C)
G) A) and B)

Question 18

Which of the following are acellular?

Accepted Answer

A)   prions
B)   protozoans
C)   archaea
D)   algae
E)   bacteriaF) All of the above
G) A) and D)

Question 19

A virus is specific to a particular type of host cell because

Accepted Answer

A)   only certain hosts enter the environment inhabited by the virus.
B)   not every virus contains metabolic machinery which can replace that of the host cell.
C)   a glycoprotein on the viral capsid is a specific match to a receptor on the surface of a compatible host cell.
D)   a host cell must be malfunctioning, or a virus cannot infect it.
E)   the genome of the virus must be similar to that of its potential host.F) None of the above
G) C) and D)

Question 20

Which of these is mismatched?

Accepted Answer

A)   cilia - bacteria
B)   flagella - bacteria
C)   flagella - slime molds
D)   flagella - water molds
E)   pseudopods - amoebasF) D) and E)
G) A) and E)

Exam 17: The Microorganisms: Viruses, Bacteria, and Protists

What feature enables the paramecium to move?

Correct AnswerverifiedA

Cyanobacteria are important producers, more specifically called

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedE

Penicillin is an antibiotic drug that interferes with cell wall synthesis in bacteria, eventually resulting in cell death. What effect would you predict if you applied penicillin to archaea?

Correct AnswerverifiedShow Answer

In which type of environment would you be most likely to find methanogenic archaea?

Correct AnswerverifiedShow Answer

Citrus tristeza virus CTV) damages and kills susceptible citrus trees around the world. It can be spread by grafting of infected plants, and by aphids, insects with piercing mouthparts that they use to suck fluid from plants. Which of the following would not limit the spread of CTV?

Correct AnswerverifiedE

Which species are representatives of the green algae?

Correct AnswerverifiedShow Answer

Which means of genetic recombination in bacteria often make use of pili?

Correct AnswerverifiedShow Answer

What structure enables a plant virus to move from one plant cell to the next?

Correct AnswerverifiedShow Answer

Which of the following groups contains at least some members that have cell walls?

Correct AnswerverifiedShow Answer

Archaea

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of Paramecium?

Correct AnswerverifiedShow Answer

As a result of drinking contaminated water, a patient contracts amoebic dysentery. Would an antibiotic drug that inhibits peptidoglycan synthesis be beneficial in treating the amoeba infection?

Correct AnswerverifiedShow Answer

Retroviruses

Correct AnswerverifiedShow Answer

Bacteria that secrete digestive enzymes into their surroundings in order to decompose nonliving organic matter are called

Correct AnswerverifiedShow Answer

Which statement about slime molds and water molds is incorrect?

Correct AnswerverifiedShow Answer

Algae are commonly grouped by their type of

Correct AnswerverifiedShow Answer

Which of the following are acellular?

Correct AnswerverifiedShow Answer

A virus is specific to a particular type of host cell because

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedShow Answer

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