Question 1

Movement in bacteria

Accepted Answer

A) is directly to or away from a stimulus. 
B) relies on the beating of cilia. 
C) is often referred to as run and tumble. 
D) may involve pili. 
E) is often referred to as run and tumble AND may involve pili. 
A) is directly to or away from a stimulus. 
B) relies on the beating of cilia. 
C) is often referred to as run and tumble. 
D) may involve pili. 
E) is often referred to as run and tumble AND may involve pili. E

Question 2

Eukaryotic cells are

Accepted Answer

A) less complex than prokaryotic cells. 
B) members of the Domains Bacteria and Archaea. 
C) defined by the presence of a membrane bound nucleus. 
D) able to reproduce more rapidly than prokaryotes. 
E) less complex than prokaryotic cells,members of the Domains Bacteria and Archaea AND able to reproduce more rapidly than prokaryotes. 
A) less complex than prokaryotic cells. 
B) members of the Domains Bacteria and Archaea. 
C) defined by the presence of a membrane bound nucleus. 
D) able to reproduce more rapidly than prokaryotes. 
E) less complex than prokaryotic cells,members of the Domains Bacteria and Archaea AND able to reproduce more rapidly than prokaryotes. C

Question 3

Which term(s)refer(s)to bacterial morphology?

Accepted Answer

A) Bacillus 
B) Coccus 
C) Polyhedral 
D) Coccus AND Bacillus 
A) Bacillus 
B) Coccus 
C) Polyhedral 
D) Coccus AND Bacillus D

Question 4

Penicillin affects the synthesis of phospholipids,thereby producing weak membranes and lysis of the bacteria.

Accepted Answer

A) True 
 B)False

Question 5

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 found in bacteria,archaea,and plants. 
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 found in bacteria,archaea,and plants.

Question 6

Electron microscopes differ from light microscopes in that

Accepted Answer

A) electrons replace light. 
B) electromagnets replace glass lenses. 
C) resolution is higher. 
D) magnification is higher. 
E) All of the choices are correct. 
A) electrons replace light. 
B) electromagnets replace glass lenses. 
C) resolution is higher. 
D) magnification is higher. 
E) All of the choices are correct.

Question 7

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 8

The Gram stain and the endospore stain both use

Accepted Answer

A) crystal violet. 
B) iodine. 
C) safranin. 
D) malachite green. 
E) acidic dyes. 
A) crystal violet. 
B) iodine. 
C) safranin. 
D) malachite green. 
E) acidic dyes.

Question 9

The use of oil with certain high-power objective lenses increases

Accepted Answer

A) magnification. 
B) the amount of light that enters the objective lens. 
C) resolution. 
D) contrast. 
E) resolution AND the amount of light that enters the objective lens. 
A) magnification. 
B) the amount of light that enters the objective lens. 
C) resolution. 
D) contrast. 
E) resolution AND the amount of light that enters the objective lens.

Question 10

The major criteria used in placing bacteria into different groups is based on differences in

Accepted Answer

A) cell wall structure. 
B) cell membrane permeability. 
C) presence or absence of flagella. 
D) detergent susceptibility. 
A) cell wall structure. 
B) cell membrane permeability. 
C) presence or absence of flagella. 
D) detergent susceptibility.

Question 11

Drugs that target prokaryotic protein synthesis would have no effect on eukaryotic protein synthesis.

Accepted Answer

A) True 
 B)False

Question 12

Which is not true of the cytoplasmic membrane?

Accepted Answer

A) It defines the boundaries of the cell. 
B) It is a semipermeable barrier. 
C) It consists mainly of a fixed,static,phospholipid bilayer. 
D) It uses proteins as selective gates and sensors. 
E) All of the choices are true. 
A) It defines the boundaries of the cell. 
B) It is a semipermeable barrier. 
C) It consists mainly of a fixed,static,phospholipid bilayer. 
D) It uses proteins as selective gates and sensors. 
E) All of the choices are true.

Question 13

Which is not true of mitochondria and chloroplasts?

Accepted Answer

A) They are found in all organisms. 
B) They contain DNA and 70S ribosomes. 
C) They are capable of performing protein synthesis. 
D) They generate ATP. 
A) They are found in all organisms. 
B) They contain DNA and 70S ribosomes. 
C) They are capable of performing protein synthesis. 
D) They generate ATP.

Question 14

Lysosomes are bags of digestive enzymes found in prokaryotic cells.

Accepted Answer

A) True 
 B)False

Question 15

The proteins of bacteria that are involved in the movement of small molecules into the cell are called

Accepted Answer

A) transport proteins. 
B) permeases. 
C) carriers. 
D) peptidases. 
E) transport proteins,permeases,AND carriers. 
A) transport proteins. 
B) permeases. 
C) carriers. 
D) peptidases. 
E) transport proteins,permeases,AND carriers.

Question 16

LPS is found in the outer membrane of Gram-positive bacteria.

Accepted Answer

A) True 
 B)False

Question 17

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 18

The cell wall of Gram-negative organisms

Accepted Answer

A) has a thick peptidoglycan layer. 
B) has a thin peptidoglycan layer. 
C) is more permeable to various molecules than the Gram-positive cell wall. 
D) is characterized by an outer membrane containing LPS. 
E) has a thin peptidoglycan layer AND is characterized by an outer membrane containing LPS. 
A) has a thick peptidoglycan layer. 
B) has a thin peptidoglycan layer. 
C) is more permeable to various molecules than the Gram-positive cell wall. 
D) is characterized by an outer membrane containing LPS. 
E) has a thin peptidoglycan layer AND is characterized by an outer membrane containing LPS.

Question 19

Which may result in Gram-positive bacteria appearing to be Gram-negative?

Accepted Answer

A) Decolorizing too long 
B) Decolorizing too short 
C) Using old cultures 
D) Using young cultures 
E) Decolorizing too long AND using old cultures 
A) Decolorizing too long 
B) Decolorizing too short 
C) Using old cultures 
D) Using young cultures 
E) Decolorizing too long AND using old cultures

Question 20

Endotoxin

Accepted Answer

A) consists of LPS. 
B) determines bacterial shape. 
C) may have different effects depending on the specific bacterial source. 
D) is toxic due to the effects of the peptide side chains. 
E) determines bacterial shape,may have different effects depending on the specific bacterial source,AND is toxic due to the effects of the peptide side chains. 
A) consists of LPS. 
B) determines bacterial shape. 
C) may have different effects depending on the specific bacterial source. 
D) is toxic due to the effects of the peptide side chains. 
E) determines bacterial shape,may have different effects depending on the specific bacterial source,AND is toxic due to the effects of the peptide side chains.

Exam 3: Microscopy and Cell Structure

Movement in bacteria

Eukaryotic cells are

Which term(s)refer(s)to bacterial morphology?

Penicillin affects the synthesis of phospholipids,thereby producing weak membranes and lysis of the bacteria.

Peptidoglycan

Electron microscopes differ from light microscopes in that

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

The Gram stain and the endospore stain both use

The use of oil with certain high-power objective lenses increases

The major criteria used in placing bacteria into different groups is based on differences in

Drugs that target prokaryotic protein synthesis would have no effect on eukaryotic protein synthesis.

Which is not true of the cytoplasmic membrane?

Which is not true of mitochondria and chloroplasts?

Lysosomes are bags of digestive enzymes found in prokaryotic cells.

The proteins of bacteria that are involved in the movement of small molecules into the cell are called

LPS is found in the outer membrane of Gram-positive bacteria.

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

The cell wall of Gram-negative organisms

Which may result in Gram-positive bacteria appearing to be Gram-negative?

Endotoxin

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 Prokaryotic Organisms

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 Tract Infections

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