Question 1

Endospores are

Accepted Answer

A)  metabolically inactive.
B)  resistant to heat and chemical destruction.
C)  resistant to destruction by radiation.
D)  living structures.
E)  All of the choices are correct.F) A) and B)
G) A) and E)

Question 2

The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.

Accepted Answer

A)  acid-fast
B)  methylene blue
C)  endospore
D)  negative
E)  basicF) B) and D)
G) D) and E)

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

After staining your patient's specimen,an aspirate from the lungs,by the acid-fast stain method and focusing on the specimen,you find a large population of hot pink-red bacillus shaped bacteria in the smear.Which statement is true?

Accepted Answer

A)  This result would be a normal outcome when looking at normal sputum of healthy people.
B)  The patient has pneumonia.
C)  In all likelihood,the patient has tuberculosis.
D)  Your patient has HIV.E) B) and C)
F) A) and D)

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A)  size of the periplasmic space.
B)  similarities of cell membrane proteins.
C)  size of the bacterial chromosome.
D)  nitrogen base sequence of rRNA.
E)  size of the ribosomes.F) B) and C)
G) All of the above

Question 7

A chain of rod-shaped cells would be called a

Accepted Answer

A)  streptobacillus.
B)  Staphylobacillus.
C)  streptococcus.
D)  staphylococcus.
E)  palisade.F) A) and D)
G) A) and E)

Question 8

Bacteria in the genus Mycoplasma and bacteria called L-forms lack cell walls.

Accepted Answer

A) True 
 B)False

Question 9

A few antibiotics target cell membranes of cells,blocking the incorporation of chemicals into sterol molecules for the cell membrane.Which statement is true?

Accepted Answer

A)  Bacteria would be unaffected by those specific antibiotics (with very few exceptions) .
B)  An antibiotic with that kind of action would be an excellent destroyer of bacterial cells.
C)  This kind of antibiotic class would destroy viruses only.
D)  Only eukaryotic cells are affected by this group of antibiotics.E) None of the above
F) A) and B)

Question 10

A bacterial genus that has waxy mycolic acid in the cell walls is

Accepted Answer

A)  Mycobacterium.
B)  Mycoplasma.
C)  Streptococcus.
D)  Corynebacterium.
E)  Salmonella.F) A) and D)
G) C) and D)

Question 11

The cell envelope or its parts can interact with human tissue and cause disease.

Accepted Answer

A) True 
 B)False

Question 12

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.

Accepted Answer

A) True 
 B)False

Question 13

Gram-negative organisms

Accepted Answer

A)  are more susceptible to antibiotics than gram-positive organisms.
B)  have a more complex wall with a greater variation in chemical composition.
C)  stain purple in the Gram stain.
D)  encompass all pathogens.E) None of the above
F) All of the above

Question 14

_____ Manual of Systematic Bacteriology is a manual of bacterial descriptions and classifications.

Accepted Answer

A)  Pasteur's
B)  Lister's
C)  Bergey's
D)  Leeuwenhoek's
E)  Koch'sF) All of the above
G) B) and E)

Question 15

Lipopolysaccharide is an important cell wall component of

Accepted Answer

A)  gram-negative bacteria.
B)  gram-positive bacteria.
C)  acid-fast bacteria.
D)  mycoplasmas.
E)  protoplasts.F) A) and B)
G) None of the above

Question 16

The function of bacterial endospores is

Accepted Answer

A)  conversion of gaseous nitrogen to a usable form for plants.
B)  reproduction and growth.
C)  protection of genetic material during harsh conditions.
D)  storage of excess cell materials.
E)  as sites for photosynthesis.F) A) and E)
G) B) and C)

Question 17

Bacterial cells could have any of the following appendages except

Accepted Answer

A)  flagella.
B)  cilia.
C)  fimbriae.
D)  periplasmic flagella (axial filaments) .
E)  pili.F) A) and D)
G) A) and B)

Question 18

Chemical analysis of a bacterial cell structure detects calcium dipicolinic acid.What is the identity of this structure?

Accepted Answer

A)  cell wall
B)  capsule
C)  slime layer
D)  nucleoid
E)  endosporeF) A) and B)
G) B) and D)

Question 19

The term that refers to flagella at both poles is

Accepted Answer

A)  amphitrichous.
B)  atrichous.
C)  lophotrichous.
D)  monotrichous.
E)  peritrichous.F) D) and E)
G) A) and C)

Question 20

Halobacterium salinarium lives in and requires salt to grow.This is an example of an archaebacterium described as a/n

Accepted Answer

A)  osmophile.
B)  halophile.
C)  thermophile.
D)  psychrophile.
E)  barophile.F) C) and D)
G) C) and E)

Exam 4: Prokaryotic Profiles: The Bacteria and Archaea

The term that refers to flagella at both poles is

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_____ Manual of Systematic Bacteriology is a manual of bacterial descriptions and classifications.

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Lipopolysaccharide is an important cell wall component of

Correct AnswerverifiedShow Answer

The cell envelope or its parts can interact with human tissue and cause disease.

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Endospores are

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Bacterial cells could have any of the following appendages except

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A bacterial genus that has waxy mycolic acid in the cell walls is

Correct AnswerverifiedShow Answer

A few antibiotics target cell membranes of cells,blocking the incorporation of chemicals into sterol molecules for the cell membrane.Which statement is true?

Correct AnswerverifiedShow Answer

Bacteria in the genus Mycoplasma and bacteria called L-forms lack cell walls.

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Gram-negative organisms

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

Correct AnswerverifiedShow Answer

Chemical analysis of a bacterial cell structure detects calcium dipicolinic acid.What is the identity of this structure?

Correct AnswerverifiedShow Answer

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.

Correct AnswerverifiedShow Answer

Halobacterium salinarium lives in and requires salt to grow.This is an example of an archaebacterium described as a/n

Correct AnswerverifiedShow Answer

The function of bacterial endospores is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

After staining your patient's specimen,an aspirate from the lungs,by the acid-fast stain method and focusing on the specimen,you find a large population of hot pink-red bacillus shaped bacteria in the smear.Which statement is true?

Correct AnswerverifiedShow Answer

A chain of rod-shaped cells would be called a

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.

Correct AnswerverifiedShow Answer

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