Question 1

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) A) and C)
G) A) and D)

Question 2

Which of the following are acellular?

Accepted Answer

A)   prions
B)   protozoans
C)   archaea
D)   algae
E)   bacteriaF) B) and E)
G) A) and B)

Question 3

In the infamous anthrax attacks of 2001, several letters were received at the offices of two U.S. senators and various news media outlets. The letters contained dry granular or powdery material. Seventeen people who came into contact with the material from the letters suffered anthrax infections; five more died of anthrax. How could dried-out material cause anthrax?

Accepted Answer

A)   Anthrax bacteria are acellular infectious particles. When they came into contact with living hosts, they entered the hosts' cells, took over their metabolic machinery, and caused them to produce more bacteria.
B)   Anthrax bacteria can form endospores under harsh environmental conditions. The material in the letters contained endospores of anthrax bacteria, which germinated and grew in the more favorable environment of the victim's bodies.
C)   Anthrax bacteria can form endospores in order to reproduce. A few active bacteria in the letters started to produce enormous numbers of endospores upon contact with the anthrax victims.
D)   Anthrax endospores are highly motile by flagella. When the endospores came into contact with human hosts, they swarmed into the bodies of their victims.
E)   None of the choices are correct.F) D) and E)
G) A) and D)

Question 4

What evidence supports the idea that archaea are more closely related to eukaryotes rather than to bacteria?

Accepted Answer

A)   Archaea and eukaryotes initiate transcription in the same fashion.
B)   Archaea and eukaryotes both have cell walls with peptidoglycan.
C)   Archaea and eukaryotes share some ribosomal proteins and have similar types of tRNA.
D)   Archaea and eukaryotes initiate transcription in the same fashion, share some ribosomal proteins, and have similar types of tRNA.
E)   None of the choices support a close relationship between eukaryotes and archaea.F) A) and D)
G) D) and E)

Question 5

Which of these is mismatched?

Accepted Answer

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

Question 6

Cell-like structures that may have resulted from macromolecular self-assembly are referred to as ________.

Accepted Answer

A)   prokaryotes
B)   protocells
C)   protoypes
D)   archaea
E)   protistsF) B) and D)
G) All of the above

Question 7

Which means of genetic recombination in bacteria requires direct contact between donor and recipient cells?

Accepted Answer

A)   transformation
B)   transduction
C)   conjugation
D)   binary fission
E)   both transduction and conjugationF) C) and D)
G) A) and C)

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) B) and C)
G) A) and E)

Question 9

The genetic material of a bacterium can include ________.

Accepted Answer

A)   a circular chromosome
B)   plasmids
C)   latent bacteriophage DNA
D)   a circular chromosome plus plasmids
E)   a circular chromosome, plasmids, and latent bacteriophage DNAF) All of the above
G) A) and E)

Question 10

Algae are commonly grouped by their type of ________.

Accepted Answer

A)   motility
B)   sexual reproduction
C)   pigment
D)   habitat
E)   feedingF) A) and D)
G) A) and C)

Question 11

Which of the following is not caused by an emerging virus?

Accepted Answer

A)   acquired immunodeficiency syndrome (AIDS) 
B)   chickenpox
C)   bird flu
D)   ebola
E)   severe acute respiratory syndrome (SARS) F) A) and E)
G) A) and C)

Question 12

Pathogens are disease-causing ________.

Accepted Answer

A)   bacteria only
B)   viruses only
C)   protists only
D)   viroids only
E)   microbesF) None of the above
G) A) and C)

Question 13

Which of these occurs during the bacteriophage lysogenic cycle but not the lytic cycle?

Accepted Answer

A)   attachment
B)   penetration
C)   integration
D)   biosynthesis
E)   maturationF) A) and C)
G) None of the above

Question 14

A researcher infects a bacterium with a bacteriophage and notices that the infection does not immediately bring about the destruction of the host cell. Instead, the phage genetic material is copied whenever the host reproduces. Which viral replication cycle is described here?

Accepted Answer

A)   integration cycle
B)   lysogenic cycle
C)   biosynthetic cycle
D)   lytic cycle
E)   emergence cycleF) D) and E)
G) A) and C)

Question 15

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) C) and D)
G) All of the above

Question 16

Some species of pathogenic bacteria are able to attack specific tissues in the human body because of

Accepted Answer

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

Question 17

African sleeping sickness is caused by a

Accepted Answer

A)   trypanosome.
B)   sporozoan.
C)   prion.
D)   bacterium.
E)   virus.F) A) and D)
G) C) and D)

Question 18

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) A) and B)
G) B) and D)

Question 19

Which of these is mismatched?

Accepted Answer

A)   malaria-protozoan
B)   AIDS-virus
C)   kuru-prion
D)   tetanus-bacterium
E)   food poisoning-archaeaF) D) and E)
G) B) and D)

Question 20

Cyanobacteria are important producers as ________.

Accepted Answer

A)   photoautotrophs
B)   saprotrophs
C)   chemoautotrophs
D)   saproautotrophs
E)   photoheterotrophsF) A) and D)
G) A) and C)

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

Which of the following is not caused by an emerging virus?

Correct Answer
verified

Cell-like structures that may have resulted from macromolecular self-assembly are referred to as ________.

Correct Answer
verified

Which of these is mismatched?

Correct Answer
verified

Correct Answer
verified

Which of these is mismatched?

Correct Answer
verified

Which of these occurs during the bacteriophage lysogenic cycle but not the lytic cycle?

Correct Answer
verified

What evidence supports the idea that archaea are more closely related to eukaryotes rather than to bacteria?

Correct Answer
verified

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

Correct Answer
verified

Protists can be

Correct Answer
verified

Algae are commonly grouped by their type of ________.

Correct Answer
verified

Which means of genetic recombination in bacteria requires direct contact between donor and recipient cells?

Correct Answer
verified

African sleeping sickness is caused by a

Correct Answer
verified

A researcher infects a bacterium with a bacteriophage and notices that the infection does not immediately bring about the destruction of the host cell. Instead, the phage genetic material is copied whenever the host reproduces. Which viral replication cycle is described here?

Correct Answer
verified

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 Answer
verified

The genetic material of a bacterium can include ________.

Correct Answer
verified

Cyanobacteria are important producers as ________.

Correct Answer
verified

Which of the following are acellular?

Correct Answer
verified

Which similarity is not shared between algae and plants?

Correct Answer
verified

Some species of pathogenic bacteria are able to attack specific tissues in the human body because of

Correct Answer
verified

Pathogens are disease-causing ________.

Correct Answer
verified

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

Which of the following is not caused by an emerging virus?

Correct AnswerverifiedShow Answer

Cell-like structures that may have resulted from macromolecular self-assembly are referred to as ________.

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedShow Answer

Which of these occurs during the bacteriophage lysogenic cycle but not the lytic cycle?

Correct AnswerverifiedShow Answer

What evidence supports the idea that archaea are more closely related to eukaryotes rather than to bacteria?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Protists can be

Correct AnswerverifiedShow Answer

Algae are commonly grouped by their type of ________.

Correct AnswerverifiedShow Answer

Which means of genetic recombination in bacteria requires direct contact between donor and recipient cells?

Correct AnswerverifiedShow Answer

African sleeping sickness is caused by a

Correct AnswerverifiedShow Answer

A researcher infects a bacterium with a bacteriophage and notices that the infection does not immediately bring about the destruction of the host cell. Instead, the phage genetic material is copied whenever the host reproduces. Which viral replication cycle is described here?

Correct AnswerverifiedShow Answer

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

The genetic material of a bacterium can include ________.

Correct AnswerverifiedShow Answer

Cyanobacteria are important producers as ________.

Correct AnswerverifiedShow Answer

Which of the following are acellular?

Correct AnswerverifiedShow Answer

Which similarity is not shared between algae and plants?

Correct AnswerverifiedShow Answer

Some species of pathogenic bacteria are able to attack specific tissues in the human body because of

Correct AnswerverifiedShow Answer

Pathogens are disease-causing ________.

Correct AnswerverifiedShow Answer

Correct Answer
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