Course

Introductory Biology

Study Pack

Set 43 The Immune System

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Question 1

(Multiple Choice)

Free
Mammals have Toll-like receptors (TLRs)that can recognize a kind of macromolecule that is absent from vertebrates but present in/on certain groups of pathogens, including viral

A) lipopolysaccharides.
B) double-stranded DNA.
C) double-stranded RNA.
D) glycoproteins.
E) phospholipids.

Answer

Question 2

(Multiple Choice)

Free
An invertebrate, such as an insect, has innate immunity activity in its intestine that likely includes

A) complement.
B) lysozyme.
C) mucus.
D) neutrophils.
E) dendritic cells.

Answer

Question 3

(Multiple Choice)

Free
Histamines trigger dilation of nearby blood vessels as well as an increase in their permeability, producing

A) redness and heat only.
B) swelling only.
C) pain.
D) redness, heat, and swelling.
E) all of the signs of a major infection.

Answer