Question 1

Eukaryotic cells

Accepted Answer

A)  are more obviously compartmentalized than prokaryotes. 
B)  usually have a single circular supercoiled piece of DNA. 
C)  contain peptidoglycan in the cell wall. 
D)  have the same size ribosomes as prokaryotes. 
E)  usually have a single circular supercoiled piece of DNA AND contain peptidoglycan in the cell wall. 
A)  are more obviously compartmentalized than prokaryotes. 
B)  usually have a single circular supercoiled piece of DNA. 
C)  contain peptidoglycan in the cell wall. 
D)  have the same size ribosomes as prokaryotes. 
E)  usually have a single circular supercoiled piece of DNA AND contain peptidoglycan in the cell wall.

Question 2

Which microscope would be the BEST selection for examination of a virus?

Accepted Answer

A)  Confocal scanning laser microscope 
B)  Atomic force microscope 
C)  Dark-field light microscope 
D)  Scanning electron microscope 
A)  Confocal scanning laser microscope 
B)  Atomic force microscope 
C)  Dark-field light microscope 
D)  Scanning electron microscope

Question 3

An advantage of the smaller size of prokaryotes, compared to eukaryotes, is

Accepted Answer

A)  high surface area relative to low cell volume. 
B)  more rapid growth rates. 
C)  compartmentalization of cellular processes in membrane-bound organelles. 
D)  predators, parasites, and competitors constantly surround them. 
E)  high surface area relative to low cell volume AND more rapid growth rates. 
A)  high surface area relative to low cell volume. 
B)  more rapid growth rates. 
C)  compartmentalization of cellular processes in membrane-bound organelles. 
D)  predators, parasites, and competitors constantly surround them. 
E)  high surface area relative to low cell volume AND more rapid growth rates.

Question 4

The resolving power of a microscope is described as the ability of the microscope to

Accepted Answer

A)  separate clearly two objects that are very close together. 
B)  magnify an object. 
C)  separate the colors of an organism's internal structure. 
D)  see structures at various depths in a tissue. 
A)  separate clearly two objects that are very close together. 
B)  magnify an object. 
C)  separate the colors of an organism's internal structure. 
D)  see structures at various depths in a tissue.

Question 5

The acid-fast stain

Accepted Answer

A)  reflects differences in cytoplasmic membrane structure. 
B)  is useful for distinguishing a small group of organisms, including Mycobacterium. 
C)  uses crystal violet and safranin. 
D)  uses carbolfuchsin and methylene blue. 
E)  is useful for distinguishing a small group of organisms, including Mycobacterium AND uses carbolfuchsin and methylene blue. 
A)  reflects differences in cytoplasmic membrane structure. 
B)  is useful for distinguishing a small group of organisms, including Mycobacterium. 
C)  uses crystal violet and safranin. 
D)  uses carbolfuchsin and methylene blue. 
E)  is useful for distinguishing a small group of organisms, including Mycobacterium AND uses carbolfuchsin and methylene blue.

Question 6

Which amino acid(s) is/are found only in the cell walls of bacteria?

Accepted Answer

A)  glycerol 
B)  L-form of glycine 
C)  diaminopimelic acid 
D)  L-form of methionine 
E)  L-form of glycine AND L-form of methionine 
A)  glycerol 
B)  L-form of glycine 
C)  diaminopimelic acid 
D)  L-form of methionine 
E)  L-form of glycine AND L-form of methionine

Question 7

Which fluorescent stain would be useful for distinguishing between dead and living bacteria?

Accepted Answer

A)  acridine orange 
B)  auramine 
C)  rhodamine 
D)  CTC 
A)  acridine orange 
B)  auramine 
C)  rhodamine 
D)  CTC

Question 8

Peptidoglycan

Accepted Answer

A)  may be digested by penicillin. 
B)  consists of a long string of NAG coupled to a long string of NAM. 
C)  may be digested by lysozyme. 
D)  is used to construct a spheroplast. 
A)  may be digested by penicillin. 
B)  consists of a long string of NAG coupled to a long string of NAM. 
C)  may be digested by lysozyme. 
D)  is used to construct a spheroplast.

Question 9

The two magnifying lenses found in a light microscope are the

Accepted Answer

A)  basic and transverse. 
B)  small and large. 
C)  ocular and objective. 
D)  simple and phase. 
A)  basic and transverse. 
B)  small and large. 
C)  ocular and objective. 
D)  simple and phase.

Question 10

Endospores are

Accepted Answer

A)  a dormant cell type. 
B)  a form of reproduction. 
C)  an obligate intracellular parasite. 
D)  sensitive to damaging environmental conditions. 
A)  a dormant cell type. 
B)  a form of reproduction. 
C)  an obligate intracellular parasite. 
D)  sensitive to damaging environmental conditions.

Question 11

Which of the following stains is/are considered differential?

Accepted Answer

A)  capsule stain. 
B)  flagella stain. 
C)  acid-fast stain. 
D)  Gram stain. 
E)  acid-fast stain AND Gram stain. 
A)  capsule stain. 
B)  flagella stain. 
C)  acid-fast stain. 
D)  Gram stain. 
E)  acid-fast stain AND Gram stain.

Question 12

Which is true of simple diffusion of water?

Accepted Answer

A)  Water usually enters a cell and produces a tremendous osmotic pressure. 
B)  Water usually leaves the cell and produces negative osmotic pressure. 
C)  Water tends to enter and leave the cell equally, resulting in no pressure in the cell. 
D)  The diffusion ultimately relies on the selectively permeable nature of the cell membrane. 
E)  Water usually enters a cell and produces a tremendous osmotic pressure AND the diffusion ultimately relies on the selectively permeable nature of the cell membrane. 
A)  Water usually enters a cell and produces a tremendous osmotic pressure. 
B)  Water usually leaves the cell and produces negative osmotic pressure. 
C)  Water tends to enter and leave the cell equally, resulting in no pressure in the cell. 
D)  The diffusion ultimately relies on the selectively permeable nature of the cell membrane. 
E)  Water usually enters a cell and produces a tremendous osmotic pressure AND the diffusion ultimately relies on the selectively permeable nature of the cell membrane.

Exam 3: Microscopy and Cell Structure

Eukaryotic cells

Which microscope would be the BEST selection for examination of a virus?

An advantage of the smaller size of prokaryotes, compared to eukaryotes, is

The resolving power of a microscope is described as the ability of the microscope to

The acid-fast stain

Which amino acid(s) is/are found only in the cell walls of bacteria?

Which fluorescent stain would be useful for distinguishing between dead and living bacteria?

Peptidoglycan

The two magnifying lenses found in a light microscope are the

Endospores are

Which of the following stains is/are considered differential?

Which is true of simple diffusion of water?

Humans and the Microbial World

The Molecules of Life

Dynamics of Prokaryotic Growth

Control of Microbial Growth

Metabolism: Fueling Cell Growth

The Blueprint of Life, From Dna to Protein

Bacterial Genetics

Biotechnology and Recombinant Dna

Identification and Classification of Prokaryotes

The Diversity of Prokaryotic Organisms

The Eukaryotic Members of the Microbial World

Viruses, Viroids and Prions

The Innate Immune Response

The Adaptive Immune Response

Host-Microbe Interactions

Immunologic Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Genitourinary Infections

Nervous System Infections

Blood and Lymphatic Infections

Hiv Disease and Complications of Immunodeficiency

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

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