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General Biology

Study Pack

Set 47 Animal Defenses Against Infection

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Question 1

(Multiple Choice)

Free
Vertebrate immune cells, which are phagocytic, include which of the following?
I. neutrophils
II. macrophages
III. dendritic cells
IV. natural killer cells

A) I and III only
B) II and IV only
C) I and IV only
D) I, II, and III

Answer

Question 2

(Multiple Choice)

Free
A strain of fruit fly lacks the ability to produce Dicer-2 protein will most likely be susceptible to which of the following types of infections?

A) viral
B) bacterial
C) fungal
D) protozoan

Answer

Question 3

(Multiple Choice)

Free
Mucus occurs in both the respiratory and digestive tracts. Which answer best describes the main immunological function of mucus?

A) to sweep away debris
B) to physically trap pathogens
C) to destroy pathogens (because mucus is acidic)
D) to increase oxygen absorption

Answer