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Microbiology - Microorganisms and Disease

Exercise : Microorganisms and Disease - Section 1
  • Microorganisms and Disease - Section 1
6.
The toxins produced by bacteria
kill viruses
encourage bacterial reproduction
interfere with physiological processes in the body
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Pseudomembraneous colitis is
precipitated by the use of certain antibiotics
caused by a gram-positive bacterium
caused by a spore-forming bacterium
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Both Mycobacterium tuberculosis and Streptococcus pneumoniae
are acquired by inhalation
have cell walls that contain a high content of mycolic acids
have polysaccharide capsules
stay in the lung and rarely, if ever, enter the bloodstream
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause
ADP ribosylation of adenylate cyclase that stops production of cAMP
ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
cleavage of rRNA that results in disruption of ribosome function
ADP ribosylation of guanylate cyclase that stimulates production of cGMP
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Mucus helps in protecting against pathogens by
lowering the pH
facilitating the growth of normal flora
blocking access and attachment of pathogens to mucosal surfaces
sequestering Iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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