Question 1

You are attempting to identify the type of helminth that has been isolated from a patient stool sample. The most important consideration to make this distinction is to _______.

Accepted Answer

A)   look at the gross anatomy to determine if the body is segmented or not
B)   examine the sample to see if microscopic eggs are present
C)   determine if the cells are eukaryotic or bacterial by looking for nuclei
D)   ask the patient about recent food and water consumptionE) A) and B)
F) None of the above

Question 2

Eukaryotic ﬂagella differ from bacterial ﬂagella because only eukaryotic ﬂagella _______.

Accepted Answer

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

Question 3

Protozoan endoplasm contains ______.

Accepted Answer

A)   ?agella
B)   ectoplasm
C)   cilia
D)   oral grooves
E)   mitochondriaF) A) and B)
G) A) and C)

Question 4

Protozoan cysts are _______.

Accepted Answer

A)   necessary for transmission to a new host
B)   analogous to bacterial endospores
C)   are produced by binary ﬁssion
D)   the primary form of replication
E)   part of all protozoan life cyclesF) A) and E)
G) A) and C)

Question 5

The cell membranes of bacteria and eukaryotes are quite similar, differing only in _______.

Accepted Answer

A)   being selectively permeable
B)   the presence of sterols
C)   the ability to transport wastes out of the cell
D)   the presence of proteins in the bilayer
E)   the presence of phospholipidsF) C) and D)
G) D) and E) B

Question 6

The two major groups of helminths are the ______ and the ______.

Accepted Answer

A)   tapeworms; ?ukes
B)   roundworms; pinworms
C)   roundworms; ?atworms
D)   cestodes; trematodesE) A) and B)
F) A) and C)

Question 7

Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular ______.

Accepted Answer

A)   symbiosis
B)   commensalism
C)   parasitism
D)   mutualismE) C) and D)
F) None of the above

Question 8

The drug cytochalasin targets actin ﬁlaments in the cytoskeleton, preventing them from forming. Treatment of a cell with cytochalasin would result in its inability to ______.

Accepted Answer

A)   form cellular extensions
B)   transport substances within the cell
C)   form the nuclear envelope structure
D)   prevent mutations in its chromosomeE) B) and D)
F) All of the above

Question 9

The vesicle that originates from the Golgi apparatus and contains a variety of digestive enzymes is the ______.

Accepted Answer

A)   lysosome
B)   magnetosome
C)   inclusion
D)   ribosome
E)   centrosomeF) B) and E)
G) All of the above

Question 10

Which of the following organisms has a cell wall?

Accepted Answer

A)   Enterobius vermicularis
B)   Entamoeba histolytica
C)   Trypanosoma cruzi
D)   Candida albicansE) A) and C)
F) C) and D)

Question 11

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

Accepted Answer

A)   Golgi apparatus
B)   Mitochondrion
C)   Endoplasmic reticulum
D)   Lysosome
E)   ChloroplastF) A) and E)
G) All of the above B

Question 12

In producing beer and wine, humans have exploited the microbial ability to ferment sugar to alcohol. The microbes responsible for this process are ______.

Accepted Answer

A)   fungi
B)   algae
C)   protozoans
D)   bacteriaE) B) and D)
F) A) and B)

Question 13

Rough endoplasmic reticulum is studded with ribosomes.

Accepted Answer

A) True 
 B)False

Question 14

Adulthood and mating of helminths occur in which host?

Accepted Answer

A)   Primary host
B)   Secondary host
C)   De?nitive host
D)   Transport host
E)   Mating occurs in all hosts.F) B) and E)
G) A) and E)

Question 15

Chitin is a chemical component of the cell walls of ______.

Accepted Answer

A)   bacteria
B)   protozoa
C)   fungi
D)   algae
E)   helminthsF) A) and C)
G) A) and E)

Question 16

In humans, fungi can only infect the skin.

Accepted Answer

A) True 
 B)False

Question 17

P?esteria is a/an ______ that produces a toxin harmful to humans.

Accepted Answer

A)   protozoan
B)   fungus
C)   endospore
D)   alga
E)   helminthF) D) and E)
G) A) and C)

Question 18

The series of tunnel-like membranes functioning in transport and storage are the ______.

Accepted Answer

A)   chloroplasts
B)   Golgi apparatus
C)   mitochondria
D)   lysosomes
E)   endoplasmic reticulumF) A) and E)
G) B) and D)

Question 19

Which of the following statements is correct?

Accepted Answer

A)   All saprobes are heterotrophic, but only some are parasitic.
B)   All heterotrophs are fungi, and include both parasites and saprobes.
C)   All fungi, whether parasite or saprobe, are heterotrophs.
D)   All heterotrophs are parasites, but only some are saprobes.E) None of the above
F) All of the above

Question 20

Cilia are exhibited by certain ______.

Accepted Answer

A)   protozoa
B)   fungi
C)   viruses
D)   bacteria
E)   algaeF) A) and C)
G) None of the above A

Exam 5: Eukaryotic Cells and Microorganisms

You are attempting to identify the type of helminth that has been isolated from a patient stool sample. The most important consideration to make this distinction is to _______.

Correct AnswerverifiedShow Answer

Eukaryotic ﬂagella differ from bacterial ﬂagella because only eukaryotic ﬂagella _______.

Correct AnswerverifiedShow Answer

Protozoan endoplasm contains ______.

Correct AnswerverifiedShow Answer

Protozoan cysts are _______.

Correct AnswerverifiedShow Answer

The cell membranes of bacteria and eukaryotes are quite similar, differing only in _______.

Correct AnswerverifiedB

The two major groups of helminths are the ______ and the ______.

Correct AnswerverifiedShow Answer

Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular ______.

Correct AnswerverifiedShow Answer

The drug cytochalasin targets actin ﬁlaments in the cytoskeleton, preventing them from forming. Treatment of a cell with cytochalasin would result in its inability to ______.

Correct AnswerverifiedShow Answer

The vesicle that originates from the Golgi apparatus and contains a variety of digestive enzymes is the ______.

Correct AnswerverifiedShow Answer

Which of the following organisms has a cell wall?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

In producing beer and wine, humans have exploited the microbial ability to ferment sugar to alcohol. The microbes responsible for this process are ______.

Correct AnswerverifiedShow Answer

Rough endoplasmic reticulum is studded with ribosomes.

Correct AnswerverifiedShow Answer

Adulthood and mating of helminths occur in which host?

Correct AnswerverifiedShow Answer

Chitin is a chemical component of the cell walls of ______.

Correct AnswerverifiedShow Answer

In humans, fungi can only infect the skin.

Correct AnswerverifiedShow Answer

P?esteria is a/an ______ that produces a toxin harmful to humans.

Correct AnswerverifiedShow Answer

The series of tunnel-like membranes functioning in transport and storage are the ______.

Correct AnswerverifiedShow Answer

Which of the following statements is correct?

Correct AnswerverifiedShow Answer

Cilia are exhibited by certain ______.

Correct AnswerverifiedA

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B

The two major groups of helminths are the and the .

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B

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A