Question 1

Which statement best describes our current understanding of protist evolution?

Accepted Answer

A)   Protists evolved from the Archaea while other eukaryotes did not.
B)   Protists evolved from multicellular eukaryotes.
C)   Protists evolved from separate branches off the early eukaryotic line.
D)   Protists evolved from eukaryotic parasites.E) C) and D)
F) B) and D)

Question 2

The human immunodeficiency virus targets:

Accepted Answer

A)   lymph nodes.
B)   all white blood cells.
C)   helper T cells.
D)   bone marrow cells.E) None of the above
F) C) and D)

Question 3

Match the following.
A) bubonic plague
B) "social amoeba"
C) a Type-A influenza
D) ciliated protist
E) truly multicellular algae
-Dictyostelium discoideum

Accepted Answer

The answer of Match the following.
A) bubonic plague
B) "social amoeba"
C)...

Question 4

Scientists mostly agree that viruses are not technically living things. Defend this position based on what you know about what viruses are and how they work.

Accepted Answer

Although viruses are made of some of the...

Question 5

Match the following.
A) rod-shaped bacteria
B) structure found in many viruses, often "borrowed" from the host cell
C) round-shaped bacteria
D) organelle not found in both bacteria and eukaryotes
E) type of organelle found in both bacteria and eukaryotes
-Ribosome

Accepted Answer

The answer of Match the following.
A) rod-shaped bacteria
B) structure found...

Question 6

Paramecium is a heterotrophic protist that moves using cilia.

Accepted Answer

A) True 
 B)False

Question 7

Organisms called plasmodial slime molds move by which process?

Accepted Answer

A)   beating of cilia
B)   cytoplasmic streaming
C)   contractile cytoskeleton movements
D)   growth in the direction of sunlightE) B) and C)
F) A) and B)

Question 8

Which of the following areas/conditions would be favored by thermophiles?

Accepted Answer

A)   anaerobic conditions
B)   deep-sea volcanic vents
C)   the arctic tundra
D)   the stomachs of herbivoresE) A) and B)
F) C) and D)

Question 9

A protist such as Chlamydomonas may switch to sexual reproduction when:

Accepted Answer

A)   there are numerous predators.
B)   there is little nutrition.
C)   a 90-day cycle is completed.
D)   hormones from nearby members of the species are detected.E) B) and C)
F) C) and D)

Question 10

Bacteria that benefit from living in or on us while we are unaffected by the relationship are termed:

Accepted Answer

A)   commensal.
B)   pathogenic.
C)   mutualistic.
D)   probiotic.E) B) and C)
F) None of the above

Question 11

Match the following.
A) bubonic plague
B) "social amoeba"
C) a Type-A influenza
D) ciliated protist
E) truly multicellular algae
-Volvox

Accepted Answer

The answer of Match the following.
A) bubonic plague
B) "social amoeba"
C)...

Question 12

The main decomposers on Earth are the:

Accepted Answer

A)   viruses and protists.
B)   plants and animals.
C)   bacteria and fungi.
D)   plants and fungi.E) None of the above
F) B) and C)

Question 13

Plasmodium falciparum is a protozoan that:

Accepted Answer

A)   can switch between plant and animal lifestyles.
B)   is closely related to fungi.
C)   causes malaria.
D)   causes intestinal distress.E) B) and D)
F) B) and C)

Question 14

Which phrase most accurately describes the genome of most viruses?

Accepted Answer

A)   surprisingly complex, with tens of thousands of genes
B)   surprisingly complex, with around 1 million genes
C)   the same as most bacteria, with hundreds of genes
D)   relatively simple, with around a dozen genes or fewerE) None of the above
F) A) and B)

Question 15

Match the following.
A) thermophile
B) anaerobe
C) halophile
D) pseudopod
E) heterotroph
-Thrives in hot environments

Accepted Answer

The answer of Match the following.
A) thermophile
B) anaerobe
C) halophile
D) pseudopod
E)...

Question 16

Match the following.
A) rod-shaped bacteria
B) structure found in many viruses, often "borrowed" from the host cell
C) round-shaped bacteria
D) organelle not found in both bacteria and eukaryotes
E) type of organelle found in both bacteria and eukaryotes
-Nucleus

Accepted Answer

The answer of Match the following.
A) rod-shaped bacteria
B) structure found...

Question 17

Which of the following would support the hypothesis that bacteria have mutually beneficial relationships with us?

Accepted Answer

A)   Bacteria derive benefit from waste materials in our intestines.
B)   Mice that were made "germ free" did not absorb and metabolize nutrients as well.
C)   Bacteria can metabolize food using alternate pathways.
D)   Most intestinal bacteria cannot live outside the body.E) A) and B)
F) C) and D)

Question 18

Malaria is caused by a bacterium.

Accepted Answer

A) True 
 B)False

Question 19

Refer to the figure below, and then answer the following question(s) . 
-The missing label indicated by a "2" corresponds to the:

Accepted Answer

A)   receptor.
B)   capsid.
C)   RNA.
D)   envelope.E) All of the above
F) A) and B)

Question 20

Which of the following would support the statement that bacteria represent the most fundamentally diverse group on Earth?

Accepted Answer

A)   Bacteria exist in varieties with and without cell walls.
B)   Bacteria accomplish all characteristics of life as small, single cells.
C)   Bacteria are metabolically diverse regarding oxygen and food requirements.
D)   Bacteria come in several different shapes.E) B) and C)
F) A) and B)

Exam 21: Viruses, Bacteria, Archaea, and Protists: the Diversity of Life 1

A protist such as Chlamydomonas may switch to sexual reproduction when:

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Match the following. A) rod-shaped bacteria B) structure found in many viruses, often "borrowed" from the host cell C) round-shaped bacteria D) organelle not found in both bacteria and eukaryotes E) type of organelle found in both bacteria and eukaryotes -Ribosome

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The main decomposers on Earth are the:

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Malaria is caused by a bacterium.

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Match the following. A) rod-shaped bacteria B) structure found in many viruses, often "borrowed" from the host cell C) round-shaped bacteria D) organelle not found in both bacteria and eukaryotes E) type of organelle found in both bacteria and eukaryotes -Nucleus

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The human immunodeficiency virus targets:

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Which statement best describes our current understanding of protist evolution?

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Match the following. A) bubonic plague B) "social amoeba" C) a Type-A influenza D) ciliated protist E) truly multicellular algae -Dictyostelium discoideum

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Paramecium is a heterotrophic protist that moves using cilia.

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Organisms called plasmodial slime molds move by which process?

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Which of the following would support the statement that bacteria represent the most fundamentally diverse group on Earth?

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Which of the following areas/conditions would be favored by thermophiles?

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Match the following. A) bubonic plague B) "social amoeba" C) a Type-A influenza D) ciliated protist E) truly multicellular algae -Volvox

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Scientists mostly agree that viruses are not technically living things. Defend this position based on what you know about what viruses are and how they work.

Correct AnswerverifiedAlthough viruses are made of some of the...View AnswerShow Answer

Which phrase most accurately describes the genome of most viruses?

Correct AnswerverifiedShow Answer

Plasmodium falciparum is a protozoan that:

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Which of the following would support the hypothesis that bacteria have mutually beneficial relationships with us?

Correct AnswerverifiedShow Answer

Refer to the figure below, and then answer the following question(s) . -The missing label indicated by a "2" corresponds to the:

Correct AnswerverifiedShow Answer

Bacteria that benefit from living in or on us while we are unaffected by the relationship are termed:

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Match the following. A) thermophile B) anaerobe C) halophile D) pseudopod E) heterotroph -Thrives in hot environments

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Although viruses are made of some of the...
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