Question 1

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

Accepted Answer

A)   the presence of phospholipids.
B)   being selectively permeable.
C)   the ability to transport wastes out of the cell.
D)   the presence of sterols.
E)   the presence of proteins in the bilayer.F) A) and E)
G) None of the above

Question 2

Algae are classified into divisions based principally on their type of motility.

Accepted Answer

A) True 
 B)False

Question 3

In eukaryotic cells,which of the following organelles contain DNA?

Accepted Answer

A)   Nucleus, nucleolus, and Golgi apparatus
B)   Nucleus, chloroplast, and peroxisome
C)   Nucleus, mitochondria, and Golgi apparatus
D)   Nucleus, endoplasmic reticulum, and Golgi apparatus
E)   Nucleus, chloroplast, and mitochondrionF) C) and E)
G) B) and E)

Question 4

Most fungi obtain nutrients from dead plants and animals.These fungi are called ______.

Accepted Answer

A)   mutualistic
B)   saprobes
C)   free-living
D)   parasites
E)   antagonistsF) A) and B)
G) C) and D) B

Question 5

The plasma cells of the immune system are responsible for secreting protein antibodies into the bloodstream.Within the plasma cell,the antibody moves through several organelles in what order?

Accepted Answer

A)   Ribosomes, Golgi apparatus, endoplasmic reticulum, lysosome
B)   Ribosomes, Golgi apparatus, endoplasmic reticulum, vesicles
C)   Ribosomes, endoplasmic reticulum, nucleolus, Golgi apparatus, vesicles
D)   Ribosomes, endoplasmic reticulum, Golgi apparatus, vesicles
E)   Ribosomes, vesicles, endoplasmic reticulum, Golgi apparatusF) All of the above
G) A) and B)

Question 6

Which organelle is found in algae but not in protozoa or fungi?

Accepted Answer

A)   Endoplasmic reticulum
B)   Chloroplasts
C)   Mitochondria
D)   Golgi apparatus
E)   LysosomesF) A) and D)
G) A) and E)

Question 7

In humans,fungi can only infect the skin.

Accepted Answer

A) True 
 B)False  False

Question 8

Rough endoplasmic reticulum is studded with ribosomes.

Accepted Answer

A) True 
 B)False

Question 9

Eating undercooked meat can lead to food-borne disease via helminthic infection.What is the common host for Taenia solium?

Accepted Answer

A)   Ducks
B)   Geese
C)   Cows
D)   Pigs
E)   ChickensF) A) and D)
G) A) and C) D

Question 10

Select that statement that reflects evidence that directly supports the endosymbiotic theory.

Accepted Answer

A)   The electron transport system is located in the cell membrane in bacteria, while in eukaryotes it is located in the mitochondrial cristae.
B)   Enzymes for photosynthesis are found embedded in membranes of the Golgi apparatus.
C)   Lysosomes contain their own DNA in the form of plasmids.
D)   Glycolysis occurs in the cytoplasm of bacterial cells.E) All of the above
F) B) and D)

Question 11

The eukaryotic cell organelle that most resembles a bacterial cell is the ______.

Accepted Answer

A)   lysosome
B)   Golgi apparatus
C)   ribosome
D)   nucleus
E)   mitochondrionF) None of the above
G) A) and C)

Question 12

A specimen from a patient suffering diarrhea shows a one-celled organism in the microscope.The organism moves very slowly by protruding its cytoplasm.You would predict that the patient has an infection caused by ______.

Accepted Answer

A)   Entamoeba
B)   Toxoplasma
C)   Plasmodium
D)   Trichomonas
E)   GiardiaF) B) and C)
G) A) and E)

Question 13

The eukaryotic cell membrane is a bilayer of sterols.

Accepted Answer

A) True 
 B)False

Question 14

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)   examine the sample to see if microscopic eggs are present.
B)   ask the patient about recent food and water consumption.
C)   look at the gross anatomy to determine if the body is segmented or not.
D)   determine if the cells are eukaryotic or bacterial by looking for nuclei.E) All of the above
F) B) and C)

Question 15

Eukaryotic flagella differ from bacterial flagella because only eukaryotic flagella

Accepted Answer

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

Question 16

The motile,feeding stage of protozoa is called the ______.

Accepted Answer

A)   oocyst
B)   cyst
C)   sporozoite
D)   food vacuole
E)   trophozoiteF) None of the above
G) C) and D)

Question 17

The glycocalyx of a eukaryotic cell is

Accepted Answer

A)   mostly polysaccharides.
B)   also called the cell wall.
C)   composed of many diverse proteins.
D)   a protective mechanism against osmotic lysis.
E)   the site where many metabolic reactions occur.F) None of the above
G) B) and C)

Question 18

All fungi cause some kind of disease in plants or animals.

Accepted Answer

A) True 
 B)False

Question 19

Protists include ______.

Accepted Answer

A)   yeasts and molds
B)   algae and protozoa
C)   helminths
D)   viruses
E)   bacteriaF) C) and D)
G) B) and C)

Question 20

In the condition called athlete's foot,the fungus Trichophyton consumes the keratin protein found in hair,nails,and dead skin.Which of the following descriptors does not apply to Trichophyton?

Accepted Answer

A)   Eukaryote
B)   Parasite
C)   Saprobe
D)   HeterotrophE) A) and B)
F) C) and D)

Exam 5: Eukaryotic Cells and Microorganisms

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

Correct AnswerverifiedShow Answer

Algae are classified into divisions based principally on their type of motility.

Correct AnswerverifiedShow Answer

In eukaryotic cells,which of the following organelles contain DNA?

Correct AnswerverifiedShow Answer

Most fungi obtain nutrients from dead plants and animals.These fungi are called ______.

Correct AnswerverifiedB

The plasma cells of the immune system are responsible for secreting protein antibodies into the bloodstream.Within the plasma cell,the antibody moves through several organelles in what order?

Correct AnswerverifiedShow Answer

Which organelle is found in algae but not in protozoa or fungi?

Correct AnswerverifiedShow Answer

In humans,fungi can only infect the skin.

Correct AnswerverifiedFalse

Rough endoplasmic reticulum is studded with ribosomes.

Correct AnswerverifiedShow Answer

Eating undercooked meat can lead to food-borne disease via helminthic infection.What is the common host for Taenia solium?

Correct AnswerverifiedD

Select that statement that reflects evidence that directly supports the endosymbiotic theory.

Correct AnswerverifiedShow Answer

The eukaryotic cell organelle that most resembles a bacterial cell is the ______.

Correct AnswerverifiedShow Answer

A specimen from a patient suffering diarrhea shows a one-celled organism in the microscope.The organism moves very slowly by protruding its cytoplasm.You would predict that the patient has an infection caused by ______.

Correct AnswerverifiedShow Answer

The eukaryotic cell membrane is a bilayer of sterols.

Correct AnswerverifiedShow Answer

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

The motile,feeding stage of protozoa is called the ______.

Correct AnswerverifiedShow Answer

The glycocalyx of a eukaryotic cell is

Correct AnswerverifiedShow Answer

All fungi cause some kind of disease in plants or animals.

Correct AnswerverifiedShow Answer

Protists include ______.

Correct AnswerverifiedShow Answer

In the condition called athlete's foot,the fungus Trichophyton consumes the keratin protein found in hair,nails,and dead skin.Which of the following descriptors does not apply to Trichophyton?

Correct AnswerverifiedShow Answer

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False

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D

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