Question 1

When a eukaryotic cell is not undergoing mitosis,the DNA and its associated proteins appear as a visible,thread-like mass called the

Accepted Answer

A)  nuclear envelope.
B)  nucleosome.
C)  nucleolus.
D)  nucleoplasm.
E)  chromatin.F) B) and C)
G) B) and E)

Question 2

Which of the following is not a function of the glycocalyx exhibited by eukaryotes?

Accepted Answer

A)  protection
B)  adherence
C)  movement
D)  reception of chemical signalsE) A) and C)
F) C) and D)

Question 3

There are no algae that can cause human disease.

Accepted Answer

A) True 
 B)False

Question 4

The fungi do not prefer to reproduce sexually compared to their frequent asexual reproductive mode.What would be the reason behind this infrequency of sexual reproduction?

Accepted Answer

A)  Sexual reproduction requires two genetically different strains of the fungus to come together.
B)  Sexual reproduction is more energy-intensive than asexual reproduction.
C)  In asexual reproduction,one parent divides.
D)  All statements are true.E) A) and B)
F) None of the above

Question 5

The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear

Accepted Answer

A)  histones.
B)  chromatin.
C)  pores.
D)  endoplasmic reticulum.
E)  inclusions.F) C) and D)
G) A) and E)

Question 6

The cytoskeleton

Accepted Answer

A)  anchors organelles.
B)  provides support.
C)  functions in movements of the cytoplasm.
D)  helps maintain cell shape.
E)  All of the choices are correct.F) A) and D)
G) All of the above

Question 7

Adulthood and mating of helminths occur in which host?

Accepted Answer

A)  primary host
B)  secondary host
C)  definitive host
D)  transport host
E)  Mating takes place in all hosts.F) A) and B)
G) B) and D)

Question 8

A protozoan having a flagellum would be classified in the genus:

Accepted Answer

A)  Entamoeba.
B)  Toxoplasma.
C)  Trypanosoma.
D)  Plasmodium.
E)  Enterobius.F) C) and D)
G) A) and D)

Question 9

The endosymbiotic theory has been developed to explain the emergence of

Accepted Answer

A)  archaea.
B)  bacteria.
C)  prokaryotes.
D)  eukaryotes.
E)  viruses.F) B) and D)
G) B) and C)

Question 10

Chitin is a chemical component of the cell walls of

Accepted Answer

A)  protozoa.
B)  algae.
C)  fungi.
D)  bacteria.
E)  helminths.F) A) and B)
G) A) and C)

Question 11

Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?

Accepted Answer

A)  mitochondrion
B)  lysosome
C)  Golgi apparatus
D)  chloroplast
E)  endoplasmic reticulumF) A) and C)
G) A) and E)

Question 12

In humans,fungi can only infect the skin.

Accepted Answer

A) True 
 B)False

Question 13

What do the protozoans Naegleria,Toxoplasma,and Trypanosoma have in common?

Accepted Answer

A)  They are all motile.
B)  They are all associated with brain infections.
C)  They are all transmitted by feces.
D)  They are all multicellular parasites.E) A) and D)
F) All of the above

Question 14

All fungi can form hyphae.

Accepted Answer

A) True 
 B)False

Question 15

Pfiesteria is a

Accepted Answer

A)  toxic fungus.
B)  toxic algae.
C)  toxic helminth.
D)  toxic protozoan.
E)  bacterial endospore.F) A) and E)
G) A) and D)

Question 16

What two categories of fungi cause human diseases?

Accepted Answer

A)  primary and secondary
B)  primary and vegetative
C)  opportunistic and primary
D)  secondary and opportunistic
E)  vegetative and reproductiveF) B) and D)
G) D) and E)

Question 17

Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella

Accepted Answer

A)  are used for cell motility.
B)  facilitate chemotaxis.
C)  facilitate phototaxis.
D)  are long,whip-like structures.
E)  contain microtubules.F) A) and D)
G) D) and E)

Question 18

The motile,feeding stage of protozoa is called the

Accepted Answer

A)  trophozoite.
B)  cyst.
C)  sporozoite.
D)  oocyst.
E)  food vacuole.F) A) and B)
G) A) and E)

Question 19

Larvae and eggs are developmental forms of

Accepted Answer

A)  protozoa.
B)  algae.
C)  helminths.
D)  fungi.
E)  yeasts.F) A) and B)
G) C) and D)

Question 20

Rough endoplasmic reticulum is studded with ribosomes.

Accepted Answer

A) True 
 B)False

Exam 5: Eukaryotic Cells and Microorganisms

When a eukaryotic cell is not undergoing mitosis,the DNA and its associated proteins appear as a visible,thread-like mass called the

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Rough endoplasmic reticulum is studded with ribosomes.

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The motile,feeding stage of protozoa is called the

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There are no algae that can cause human disease.

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Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella

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Larvae and eggs are developmental forms of

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The endosymbiotic theory has been developed to explain the emergence of

Correct AnswerverifiedShow Answer

In humans,fungi can only infect the skin.

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What two categories of fungi cause human diseases?

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Which of the following is not a function of the glycocalyx exhibited by eukaryotes?

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The cytoskeleton

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The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear

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Pfiesteria is a

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Adulthood and mating of helminths occur in which host?

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All fungi can form hyphae.

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A protozoan having a flagellum would be classified in the genus:

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What do the protozoans Naegleria,Toxoplasma,and Trypanosoma have in common?

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Chitin is a chemical component of the cell walls of

Correct AnswerverifiedShow Answer

The fungi do not prefer to reproduce sexually compared to their frequent asexual reproductive mode.What would be the reason behind this infrequency of sexual reproduction?

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Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?

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