Question 1

The Ziehl-Neelson stain is used to

Accepted Answer

A)  observe bacteria which have a waxy outer layer.
B)  detect the presence of mycobacteria in sputum.
C)  aid in the diagnosis of tuberculosis.
D)  stain certain bacteria which do not react with the Gram stain.
E)  all of the above.F) B) and D)
G) B) and C)

Question 2

During the stationary phase of bacterial growth

Accepted Answer

A)  the rate of cell division equals the rate of cell death.
B)  the lack of nutrients means there is no cell replication.
C)  the cells stop growing to produce endospores.
D)  the cells are in a resting phase prior to rapid multiplication.
E)  all of the above.F) A) and C)
G) B) and D)

Question 3

Bacterial cell membranes consist of

Accepted Answer

A)  a single layer of phospholipids.
B)  protein molecules embedded in a phospholipid bilayer.
C)  glycoprotein,phospholipid and sterols.
D)  lipopolysaccharide embedded in a phospholipid bilayer.
E)  proteins,peptidoglycan and sterols.F) B) and E)
G) A) and B)

Question 4

The passage of water from an area of high water concentration to an area of low water concentration is called

Accepted Answer

A)  active transport.
B)  facilitated diffusion.
C)  filtration.
D)  osmosis.
E)  none of the above.F) A) and B)
G) C) and D)

Question 5

Which of the following organisms is a normal inhabitant of the upper respiratory tract,but can cause otitis media and meningitis?

Accepted Answer

A)  Group B streptococci.
B)  Streptococcus pneumoniae.
C)  Staphylococci.
D)  Escherichia coli.
E)  Normal inhabitants don't cause disease.F) D) and E)
G) A) and B)

Question 6

Which of the following is TRUE of endospores?

Accepted Answer

A)  They can withstand boiling at 100OC.
B)  They are formed under adverse conditions.
C)  Only one endospore is formed from each bacterial cell.
D)  They consist of DNA enclosed in a spore coat.
E)  All of the above.F) B) and E)
G) B) and C)

Question 7

The cell walls of bacteria

Accepted Answer

A)  enable them to be pleomorphic.
B)  protect them against penicillin-derived antibiotics.
C)  are single layered,but very thick.
D)  protect the cells against changes in osmotic pressure.
E)  all of the above.F) A) and E)
G) A) and D)

Exam 3: Bacteria

Bacterial cell membranes consist of

Correct Answer
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The cell walls of bacteria

Correct Answer
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Which of the following is TRUE of endospores?

Correct Answer
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The Ziehl-Neelson stain is used to

Correct Answer
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The passage of water from an area of high water concentration to an area of low water concentration is called

Correct Answer
verified

During the stationary phase of bacterial growth

Correct Answer
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Which of the following organisms is a normal inhabitant of the upper respiratory tract,but can cause otitis media and meningitis?

Correct Answer
verified

Exam 3: Bacteria

Bacterial cell membranes consist of

Correct AnswerverifiedShow Answer

The cell walls of bacteria

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Which of the following is TRUE of endospores?

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The Ziehl-Neelson stain is used to

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The passage of water from an area of high water concentration to an area of low water concentration is called

Correct AnswerverifiedShow Answer

During the stationary phase of bacterial growth

Correct AnswerverifiedShow Answer

Which of the following organisms is a normal inhabitant of the upper respiratory tract,but can cause otitis media and meningitis?

Correct AnswerverifiedShow Answer

Correct Answer
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