Select one: a. the primary response. b. the time of exposure to the same antigen

Question

Select one:

a. the primary response.

b. the time of exposure to the same antigen as at time (a).

c. the T-cell response.

d. the secondary response.

e. exposure to a new antigen.

Which of the following is found normally in serum?

Select one:

a. leukocytosis-promoting factor

b. complement

c. TLRs

d. histamine

e. interferon

Question 62

Question text

The antibodies found in mucus, saliva, and tears are

Select one:

a. IgG.

b. IgE.

c. IgM.

d. IgA.

e. IgD.

Question 63

Question text

Defensins are short antimicrobial peptides found within mucous membranes and phagocytes.

Select one:

True

False

Question 64

Question text

You fall off of your bike and suffer a deep cut on her leg. The cut went through your skin and you're bleeding. Which of the following defense mechanisms will participate in eliminating contaminating microbes?

Select one:

a. normal skin flora

b. phagocytosis in the inflammatory response

c. lysozyme

d. mucociliary escalator

e. acidic skin secretions

Question 65

Question text

Which of the following statements about hospital-acquired (nosocomial) infections is FALSE?

Select one:

a. They may be caused by drug-resistant bacteria.

b. The patient was infected before hospitalization.

c. They occur in compromised patients.

d. They may be caused by opportunists.

e. They may be caused by normal microbiota.

Explanation / Answer

60. d. the secondary response.

The arrow at time (c) indicates the secondary response in Antibody titer Vs Time graph

61. b. complement

Complement is found normally in serum

62. d. IgA.

The antibodies found in mucus, saliva, and tears are IgA type.

63. True

Defensins are short antimicrobial peptides found within mucous membranes and phagocytes.

64. Phagocytosis in the inflammatory response will participate in eliminating contaminating microbes.   

65. "The patient was infected before hospitalization" is FALSE because hospital-acquired infections occur only after admitting in the hospital.

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