Chapter 10 - Multiple Choice

Question 1

A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:

a. synthetic drug
b. antibiotic
c. interferon
d. competitive inhibitor

Answer 1

b

Question 2

The main consideration(s) in selecting an effective antimicrobial is/are:

a. the identity of the infecting microbe
b. the microbe’s sensitivity to available drugs
c. the overall medical status of the infected host.
d. a and b
e. a, b, and c

Answer 2

e

Question 3

Drugs that prevent the formation of the bacterial cell wall are:

a. quinolones
b. penicillins
c. tetracyclines
d. aminoglycosides

Answer 3

b

Question 4

Microbial resistance to drugs is acquired through

a. conjugation
b. transformation
c. transduction
d. all of these

Answer 4

d

Question 5

Antimalarial treatments are difficult because

a. the protozoal parasite (Plasmodium) is eukaryotic and therefore similar to human cells.
b. there are several species of Plasomodium
c. no single drug can target all the life stages of Plasmodium
d. all of the above are true.

Answer 5

d

Question 6

Most antihelminthic drugs function by

a. weakening the worms so they can be flushed out by the intestine.
b. inhibiting worm metabolism
c. blocking the absorption of nutrients
d. inhibiting egg production

Answer 6

b

Question 7

The MIC is the ______ of a drug that is required to inhibit growth of a microbe.

a. largest concentration
b. standard dose
c. smallest concentration
d. lowest dilution

Answer 7

c

Question 8

An antimicrobial drug with a ______ therapeutic index is a better choice than one with a ______ therapeutic index.

a. low; high
b. high; low

Answer 8

b