Question 1

What feature do all protists share?

Accepted Answer

A)  mode of locomotion
B)  method of food consumption
C)  method of obtaining energy
D)  mode of reproduction
E)  None of the answers are correct.F) B) and E)
G) A) and D)

Question 2

African sleeping sickness is caused by Trypanosoma brucei,a unicellular,flagellated protist that infects red blood cells after entering the bloodstream.African sleeping sickness is transmitted by

Accepted Answer

A)  ingesting food.
B)  contaminated water.
C)  sexual intercourse.
D)  the bite of an insect.
E)  exhaled aerosols.F) A) and B)
G) A) and D)

Question 3

Fungi and animals are similar because they both

Accepted Answer

A)  are phototrophs.
B)  have cell walls made of chitin.
C)  are heterotrophs.
D)  use starch as their main storage carbohydrate.
E)  are decomposers.F) C) and D)
G) B) and D)

Question 4

The endoplasmic reticulum,Golgi body,and other membranous organelles of cells might have formed by numerous infoldings of the cell's outer membrane.

Accepted Answer

A) True 
 B)False

Question 5

African sleeping sickness is caused by Trypanosoma brucei,a unicellular,flagellated protist that infects red blood cells after entering the bloodstream.Trypanosoma brucei is which of the following?

Accepted Answer

A)  an alga
B)  a protozoan
C)  a slime mold
D)  a diatom
E)  a water moldF) A) and B)
G) C) and D)

Question 6

Endophyte translates to "inside plant" and refers to which of the following?

Accepted Answer

A)  bacteria that live inside of plants and help protect plants from disease-causing organisms
B)  fungi that live inside of plants and produce oxygen for the plant
C)  bacteria that live inside of plants and produce carbon dioxide for the plant
D)  fungi that live inside of plants and help protect plants from disease-causing organisms
E)  protozoans that live within plant cells and kill invading microorganismsF) D) and E)
G) None of the above

Question 7

During a malaria infection,Plasmodium falciparum grow inside of human cells as

Accepted Answer

A)  autotrophs.
B)  heterotrophs.
C)  phototrophs.
D)  heterotrophs and autotrophs.
E)  autotrophs and phototrophs.F) A) and D)
G) D) and E)

Question 8

Heterotrophs must acquire carbon from organic molecules produced from other organisms.

Accepted Answer

A) True 
 B)False

Question 9

Chlamydomonas is unicellular and photosynthetic.Chlamydomonas is which of the following?

Accepted Answer

A)  a slime mold
B)  an apicomplexan
C)  an amoeba
D)  a protozoan
E)  a green algaF) D) and E)
G) A) and D)

Question 10

Slime molds may exist as either single amoeboid cells or large masses of cells that behave as one multicellular organism.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is true of prokaryotes?

Accepted Answer

A)  Prokaryotes have a nucleus.
B)  Prokaryotes are single-celled.
C)  Prokaryotes do not have a chromosome.
D)  Prokaryotes have membrane-bounded organelles.
E)  Prokaryotes do not have ribosomes.F) B) and D)
G) None of the above

Question 12

Trichonympha is a unicellular,flagellated protist that lives within termites and allows the termite to be able to "digest" wood.Trichonympha is which of the following?

Accepted Answer

A)  an autotroph
B)  a heterotroph and autotroph
C)  a detritivore
D)  a heterotroph
E)  a heterotroph and detritovoreF) A) and B)
G) B) and D)

Question 13

The first multicellular organisms probably arose about

Accepted Answer

A)  1.2 billion years ago.
B)  500 million years ago.
C)  two billion years ago.
D)  3.5 billion years ago.
E)  six billion years ago.F) None of the above
G) A) and E)

Question 14

All protists

Accepted Answer

A)  are prokaryotes.
B)  lack a nucleus.
C)  lack membrane-bounded organelles.
D)  are eukaryotes.
E)  are multicellular.F) A) and E)
G) C) and E)

Question 15

Why do scientists hypothesize that RNA was the first form of genetic material?

Accepted Answer

A)  All answers are correct.
B)  RNA can catalyze reactions.
C)  RNA can store genetic information.
D)  RNA can self-replicate.
E)  RNA can use genetic information to make proteins.F) None of the above
G) A) and D)

Question 16

Which is the best description of the mutual benefit to both species found in a lichen?

Accepted Answer

A)  The autotroph provides food and the heterotroph provides water and minerals.
B)  The autotroph prevents dehydration and the heterotroph provides energy.
C)  The autotroph provides water and minerals and the heterotroph prevents dehydration.
D)  The heterotroph protects the autotroph from predation.
E)  The autotroph produces antibiotics to ward off infection to the heterotroph by bacteria.F) None of the above
G) A) and E)

Question 17

An organism to which oxygen is toxic is an obligate anaerobe.

Accepted Answer

A) True 
 B)False

Question 18

In the section "Investigating Life: The Battle for Position in Cacao Tree Leaves",what was the dependent variable?

Accepted Answer

A)  the age of the leaf
B)  the percent of the leaf area damaged
C)  the presence or absence of endophyte spores
D)  the presence or absence of the pathogen Phytophthora
E)  the percent of the leaf area containing endophytesF) A) and B)
G) C) and D)

Question 19

A prokaryote that occupies a habitat consisting of a low pH is a(an)

Accepted Answer

A)  thermophile.
B)  halophile.
C)  basophile.
D)  acidophile.
E)  hydrophilE.F) B) and D)
G) C) and D)

Question 20

Cyanobacteria are phototrophic.Which of the following would they also be considered?

Accepted Answer

A)  heterotrophic
B)  autotrophic
C)  chemotrophic
D)  obligate anaerobes
E)  aerobicF) A) and B)
G) A) and C)

Exam 15: Evolution and Diversity of Microbial Life

Why do scientists hypothesize that RNA was the first form of genetic material?

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In the section "Investigating Life: The Battle for Position in Cacao Tree Leaves",what was the dependent variable?

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Heterotrophs must acquire carbon from organic molecules produced from other organisms.

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Cyanobacteria are phototrophic.Which of the following would they also be considered?

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Trichonympha is a unicellular,flagellated protist that lives within termites and allows the termite to be able to "digest" wood.Trichonympha is which of the following?

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All protists

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African sleeping sickness is caused by Trypanosoma brucei,a unicellular,flagellated protist that infects red blood cells after entering the bloodstream.African sleeping sickness is transmitted by

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African sleeping sickness is caused by Trypanosoma brucei,a unicellular,flagellated protist that infects red blood cells after entering the bloodstream.Trypanosoma brucei is which of the following?

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Endophyte translates to "inside plant" and refers to which of the following?

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What feature do all protists share?

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The first multicellular organisms probably arose about

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Slime molds may exist as either single amoeboid cells or large masses of cells that behave as one multicellular organism.

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The endoplasmic reticulum,Golgi body,and other membranous organelles of cells might have formed by numerous infoldings of the cell's outer membrane.

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Which is the best description of the mutual benefit to both species found in a lichen?

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During a malaria infection,Plasmodium falciparum grow inside of human cells as

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Chlamydomonas is unicellular and photosynthetic.Chlamydomonas is which of the following?

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Which of the following is true of prokaryotes?

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A prokaryote that occupies a habitat consisting of a low pH is a(an)

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An organism to which oxygen is toxic is an obligate anaerobe.

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Fungi and animals are similar because they both

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