Antibiotics and their Mode of Action

 

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Antibiotics and their Mode of Action

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Question 1
Which of the following does not affect the activity of penicillin?
A
bile
B
hydrochloric acid
C
cysteine
D
sodium hydroxide
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Question 2
Antibiotic produced by Streptomyces rimosus is .....
A
chlortetracycline
B
oxytetracycline
C
tetracycline
D
doxycycline
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Question 3
Which of the following inhibits protein synthesis by combining with the 50S subunit ribosome?
A
Streptomycin
B
Tetracycline
C
Chloramphenicol
D
Penicillin
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Question 4
Structurally all penicillins have only beta-lactam present in them.
A
True
B
False
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Question 5
Tyrocidines are more effective against .....
A
Gram-positive organisms
B
Gram-negative organisms
C
Mycoplasmas
D
Spirochetes
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There are 5 questions to complete.

 

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