Question

27. Which of the following statements about exotoxins is generally FALSE? A) They are more potent than endotoxins. B) They are composed of proteins. C) They are composed of lipopolysaccharides. D) They have specific methods of action. E) They are produced by gram-positive bacteria. 28. All of the following are examples of entry via the parenteral route EXCEPT A) injection. B) bite. C) surgery. D) hair follicle. E) skin cut. 29. Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages A) give new gene sequences to the host bacteria. B) produce toxins. C) carry plasmids. D) kill the bacteria, causing release of endotoxins. E) kill human cells. 30. All of the following bacteria release endotoxin EXCEPT A) Staphylococcus aureus. B) Salmonella typhi. C) Neisseria meningitidis. D) Proteus vulgaris. E) Haemophilus influenzae. 31. Nonpathogenic Escherichia coli acquired the Shiga toxin gene by A) phagocytosis. B) transduction. C) conjugation. D) transformation. E) None of the above

          27. Which of the following statements about exotoxins is
generally FALSE?
A) They are more potent than endotoxins.
B) They are composed of proteins.
C) They are composed of lipopolysaccharides.
D) They have specific methods of action.
E) They are produced by gram-positive bacteria.

28. All of the following are examples of entry via the parenteral
route EXCEPT
A) injection.
B) bite.
C) surgery.
D) hair follicle.
E) skin cut.

29. Lysogenic bacteriophages contribute to bacterial virulence
because bacteriophages
A) give new gene sequences to the host bacteria.
B) produce toxins.
C) carry plasmids.
D) kill the bacteria, causing release of endotoxins.
E) kill human cells.

30. All of the following bacteria release endotoxin EXCEPT
A) Staphylococcus aureus.
B) Salmonella typhi.
C) Neisseria meningitidis.
D) Proteus vulgaris.
E) Haemophilus influenzae.

31. Nonpathogenic Escherichia coli acquired the Shiga toxin
gene by
A) phagocytosis.
B) transduction.
C) conjugation.
D) transformation.
E) None of the above

27. Which of the following statements about exotoxins is
generally FALSE?
A) They are more potent than endotoxins.
B) They are composed of proteins.
C) They are composed of lipopolysaccharides.
D) They have specific methods of action.
E) They are produced by gram-positive bacteria.

28. All of the following are examples of entry via the parenteral
route EXCEPT
A) injection.
B) bite.
C) surgery.
D) hair follicle.
E) skin cut.

29. Lysogenic bacteriophages contribute to bacterial virulence
because bacteriophages
A) give new gene sequences to the host bacteria.
B) produce toxins.
C) carry plasmids.
D) kill the bacteria, causing release of endotoxins.
E) kill human cells.

30. All of the following bacteria release endotoxin EXCEPT
A) Staphylococcus aureus.
B) Salmonella typhi.
C) Neisseria meningitidis.
D) Proteus vulgaris.
E) Haemophilus influenzae.

31. Nonpathogenic Escherichia coli acquired the Shiga toxin
gene by
A) phagocytosis.
B) transduction.
C) conjugation.
D) transformation.
E) None of the above

Added by Brenda A.

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