Question 1

Naked strands of RNA not covered by a capsid are

Accepted Answer

A)   viroids.
B)   archaea.
C)   prions.
D)   retroviruses.
E)   viruses.F) B) and E)
G) B) and C)

Question 2

Which type of archaea use a pigment related to the rhodopsin, a pigment found in human eyes, to absorb solar energy and pump chloride ions?

Accepted Answer

A)   methanogens
B)   halophiles
C)   thermoacidophiles
D)   alkaliphiles
E)   psychrophilesF) A) and D)
G) D) and E)

Question 3

The _____ of a virus is enclosed by a _____ capsid.

Accepted Answer

A)   nucleic acid; protein
B)   membrane; protein
C)   nucleic acid; membrane
D)   protein; nucleic acid
E)   RNA; DNAF) C) and D)
G) A) and C)

Question 4

Some species of pathogenic bacteria are able to attack specific tissues in the human body due to structures called

Accepted Answer

A)   adhesion factors.
B)   bioremediaton factors.
C)   flagella.
D)   conjugation pili.
E)   cilia.F) C) and D)
G) A) and B)

Question 5

Which of the following does not provide support for the endosymbiotic hypothesis?

Accepted Answer

A)   Double membranes are around mitochondria and chloroplasts.
B)   Mitochondria and chloroplasts have their own genomes.
C)   Mitochondria and chloroplasts can synthesize proteins.
D)   Mitochondria and chloroplasts contain genes that are strikingly similar to bacterial genes.
E)   Mitochondria and chloroplasts contribute to different metabolic processes in the eukaryotic cell.F) None of the above
G) All of the above

Question 6

Which is the correct order of events in the lytic cycle of a bacteriophage?

Accepted Answer

A)   attachment - penetration - biosynthesis - maturation - release
B)   integration - penetration - biosynthesis - maturation - release
C)   attachment - integration - biosynthesis - maturation - release
D)   attachment - biosynthesis - maturation - release
E)   penetration - attachment - biosynthesis - release - maturationF) All of the above
G) A) and B)

Question 7

Without bacteria in the environment,

Accepted Answer

A)   adequate amounts of carbon would not be available to living organisms.
B)   plants would not be able to grow due to lack of nitrogen.
C)   bioremediation would have limited use as a tool to clean up pollutants.
D)   there would be a shortage of decomposer organisms.
E)   All of the choices are correct.F) C) and E)
G) C) and D)

Question 8

Which similarity is not shared between algae and plants?

Accepted Answer

A)   Algae are eukaryotes.
B)   Algae are photoautotrophs.
C)   Algae are producers.
D)   Algae were once classified as plants.
E)   Most algae have some form of locomotion.F) A) and B)
G) None of the above

Question 9

What would you call a long chain of Streptococcus bacterial cells that are spherical in shape?

Accepted Answer

A)   Streptococcus
B)   Staphylococcus
C)   Streptobacillus
D)   Diplococcus
E)   StreptospirillumF) A) and E)
G) B) and E)

Question 10

Your task as a researcher is to develop a new drug to prevent retrovirus infections in newly exposed individuals. Which of the means listed is likely to be the most effective?

Accepted Answer

A)   blocking enzyme action
B)   destroying the viral genome
C)   dissolving the capsid
D)   preventing conjugation
E)   disrupting the viral envelopeF) D) and E)
G) None of the above

Question 11

Protists can be

Accepted Answer

A)   unicellular only.
B)   unicellular or colonial, but not multicellular.
C)   colonial only.
D)   colonial or multicellular, but not unicellular.
E)   unicellular, colonial, or multicellular.F) B) and E)
G) D) and E)

Question 12

A viroid is a naked, infectious _____ molecule.

Accepted Answer

A)   protein
B)   DNA
C)   RNA
D)   fatty acid
E)   enzymeF) A) and B)
G) B) and D)

Question 13

Which group of organisms are viroids not viruses)  most likely to parasitize?

Accepted Answer

A)   plants
B)   bacteria
C)   fish
D)   fungi
E)   cattleF) A) and B)
G) A) and D)

Question 14

Which sporozoan characteristic is most consistent with a parasitic lifestyle?

Accepted Answer

A)   lack of motility
B)   chemoheterotrophism
C)   unicellular
D)   lack of light-absorbing pigment
E)   eukaryoticF) A) and B)
G) A) and C)

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

What would you call a long chain of Streptococcus bacterial cells that are spherical in shape?

Correct Answer
verified

The _ of a virus is enclosed by a _ capsid.

Correct Answer
verified

Without bacteria in the environment,

Correct Answer
verified

Which similarity is not shared between algae and plants?

Correct Answer
verified

Your task as a researcher is to develop a new drug to prevent retrovirus infections in newly exposed individuals. Which of the means listed is likely to be the most effective?

Correct Answer
verified

Protists can be

Correct Answer
verified

Which sporozoan characteristic is most consistent with a parasitic lifestyle?

Correct Answer
verified

Which group of organisms are viroids not viruses) most likely to parasitize?

Correct Answer
verified

Naked strands of RNA not covered by a capsid are

Correct Answer
verified

Which type of archaea use a pigment related to the rhodopsin, a pigment found in human eyes, to absorb solar energy and pump chloride ions?

Correct Answer
verified

Which of the following does not provide support for the endosymbiotic hypothesis?

Correct Answer
verified

Some species of pathogenic bacteria are able to attack specific tissues in the human body due to structures called

Correct Answer
verified

A viroid is a naked, infectious _____ molecule.

Correct Answer
verified

Which is the correct order of events in the lytic cycle of a bacteriophage?

Correct Answer
verified

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

What would you call a long chain of Streptococcus bacterial cells that are spherical in shape?

Correct AnswerverifiedShow Answer

The _____ of a virus is enclosed by a _____ capsid.

Correct AnswerverifiedShow Answer

Without bacteria in the environment,

Correct AnswerverifiedShow Answer

Which similarity is not shared between algae and plants?

Correct AnswerverifiedShow Answer

Your task as a researcher is to develop a new drug to prevent retrovirus infections in newly exposed individuals. Which of the means listed is likely to be the most effective?

Correct AnswerverifiedShow Answer

Protists can be

Correct AnswerverifiedShow Answer

Which sporozoan characteristic is most consistent with a parasitic lifestyle?

Correct AnswerverifiedShow Answer

Which group of organisms are viroids not viruses) most likely to parasitize?

Correct AnswerverifiedShow Answer

Naked strands of RNA not covered by a capsid are

Correct AnswerverifiedShow Answer

Which type of archaea use a pigment related to the rhodopsin, a pigment found in human eyes, to absorb solar energy and pump chloride ions?

Correct AnswerverifiedShow Answer

Which of the following does not provide support for the endosymbiotic hypothesis?

Correct AnswerverifiedShow Answer

Some species of pathogenic bacteria are able to attack specific tissues in the human body due to structures called

Correct AnswerverifiedShow Answer

A viroid is a naked, infectious _____ molecule.

Correct AnswerverifiedShow Answer

Which is the correct order of events in the lytic cycle of a bacteriophage?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The _ of a virus is enclosed by a _ capsid.

Correct Answer
verified

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