Question 1

A bacterial cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is ______.

Accepted Answer

A)  a spheroplast
B)  acid-fast
C)  gram-negative
D)  gram-positive
E)  a protoplastF) A) and D)
G) D) and E)

Question 2

The chromosome in bacteria and archaea

Accepted Answer

A)  contains all the cell's plasmids.
B)  is located in the cell membrane.
C)  forms a single linear strand of DNA.
D)  is part of the nucleoid.E) A) and D)
F) All of the above

Question 3

The bacterial flagellum has three components.In order from the cytoplasm to the external environment, they are ______.

Accepted Answer

A)  hook, basal body, and filament
B)  filament, hook, and basal body
C)  filament, basal body, and hook
D)  basal body, hook, and filament
E)  basal body, filament, and hookF) C) and E)
G) A) and E)

Question 4

Mycobacterium and Nocardia are distinguished from other bacteria by the ______ stain.

Accepted Answer

A)  endospore
B)  basic
C)  methylene blue
D)  Gram
E)  acid-fastF) B) and C)
G) A) and B)

Question 5

The term that refers to the presence of a tuft of flagella emerging from a single site is ______.

Accepted Answer

A)  amphitrichous
B)  lophotrichous
C)  atrichous
D)  peritrichous
E)  monotrichousF) A) and E)
G) C) and D)

Question 6

Halobacterium salinarum lives in and requires a high salt concentration.This is an example of an archaeon described as a ______.

Accepted Answer

A)  barophile
B)  halophile
C)  thermophile
D)  psychrophileE) B) and C)
F) None of the above

Question 7

If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is the ______.

Accepted Answer

A)  slime layer
B)  capsule
C)  endospore
D)  cell membrane
E)  cell wallF) D) and E)
G) A) and E)

Question 8

Magnetosomes are

Accepted Answer

A)  infoldings of the cell membrane.
B)  found in all bacteria and some archaea.
C)  responsible for the heat resistance of endospores.
D)  also termed metachromatic granules.
E)  composed of magnetic iron oxide particles.F) B) and D)
G) C) and D)

Question 9

All bacterial cells have ______.

Accepted Answer

A)  an S-layer
B)  flagella
C)  the ability to produce endospores
D)  capsules
E)  a chromosomeF) A) and D)
G) C) and E)

Question 10

Plasmids

Accepted Answer

A)  are found in all bacteria.
B)  are essential for survival.
C)  are located in microcompartments.
D)  cannot be passed between organisms.
E)  often carry genes controlling pathogenicity.F) A) and B)
G) C) and E)

Question 11

Both gram-positive and gram-negative cells have outer membranes.

Accepted Answer

A) True 
 B)False

Question 12

The term diplococcus refers to an irregular cluster of spherical bacterial cells.

Accepted Answer

A) True 
 B)False

Question 13

At present, the most accurate indicator of evolutionary relatedness among organisms is the

Accepted Answer

A)  size of the bacterial chromosome.
B)  similarities of cell membrane proteins.
C)  sequence of the ribosomal small subunit RNA.
D)  size of the ribosomes.
E)  size of the periplasmic space.F) All of the above
G) B) and C)

Question 14

Which of the following is mismatched?

Accepted Answer

A)  Psychrophiles - adapted to very low temperatures
B)  Extreme halophiles - adapted to salty habitats
C)  Methanogens - convert CO2 and H2 into methane
D)  Hyperthermophiles - adapted to high temperatures
E)  Thermoplasmas - adapted to warm-blooded animal environmentsF) A) and E)
G) B) and D)

Question 15

Which term is not used to describe bacterial cell shape?

Accepted Answer

A)  Spirochete
B)  Vibrio
C)  Coccus
D)  Bacillus
E)  TetradF) A) and B)
G) All of the above

Question 16

The term that refers to flagella at both poles of the cell is ______.

Accepted Answer

A)  peritrichous
B)  atrichous
C)  monotrichous
D)  amphitrichous
E)  lophotrichousF) B) and D)
G) C) and D)

Question 17

Some bacteria have a cytoskeleton of sterols to help maintain their shape.

Accepted Answer

A) True 
 B)False

Question 18

The region between the bacterial cell membrane and the cell wall is called the outer membrane.

Accepted Answer

A) True 
 B)False

Question 19

In which situation would a bacterium most likely have cytoplasmic inclusions?

Accepted Answer

A)  When producing an endospore
B)  When the cell is synthesizing flagella
C)  When the cell is starved for nutrients
D)  In a habitat abundant in nutrientsE) B) and C)
F) A) and D)

Question 20

Which of the following properties are shared by both bacteria and archaea?

Accepted Answer

A)  Single, circular chromosome
B)  Method of DNA compaction
C)  Cell wall polysaccharides
D)  Ester linkages in fatty acidsE) All of the above
F) A) and C)

Exam 4: Bacteria and Archaea

The bacterial flagellum has three components.In order from the cytoplasm to the external environment, they are ______.

Correct AnswerverifiedShow Answer

The region between the bacterial cell membrane and the cell wall is called the outer membrane.

Correct AnswerverifiedShow Answer

Mycobacterium and Nocardia are distinguished from other bacteria by the ______ stain.

Correct AnswerverifiedShow Answer

The term that refers to the presence of a tuft of flagella emerging from a single site is ______.

Correct AnswerverifiedShow Answer

The chromosome in bacteria and archaea

Correct AnswerverifiedShow Answer

In which situation would a bacterium most likely have cytoplasmic inclusions?

Correct AnswerverifiedShow Answer

Which term is not used to describe bacterial cell shape?

Correct AnswerverifiedShow Answer

Both gram-positive and gram-negative cells have outer membranes.

Correct AnswerverifiedShow Answer

Which of the following properties are shared by both bacteria and archaea?

Correct AnswerverifiedShow Answer

Some bacteria have a cytoskeleton of sterols to help maintain their shape.

Correct AnswerverifiedShow Answer

The term that refers to flagella at both poles of the cell is ______.

Correct AnswerverifiedShow Answer

Plasmids

Correct AnswerverifiedShow Answer

Magnetosomes are

Correct AnswerverifiedShow Answer

Halobacterium salinarum lives in and requires a high salt concentration.This is an example of an archaeon described as a ______.

Correct AnswerverifiedShow Answer

All bacterial cells have ______.

Correct AnswerverifiedShow Answer

The term diplococcus refers to an irregular cluster of spherical bacterial cells.

Correct AnswerverifiedShow Answer

A bacterial cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is ______.

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is the ______.

Correct AnswerverifiedShow Answer

At present, the most accurate indicator of evolutionary relatedness among organisms is the

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified