Antigens are foreign molecules that trigger the generation of antibodies. Antibodies are produced by the immune system in response to the presence of antigens and help to protect the body against invading pathogens. Antigens can include proteins, carbohydrates, and other molecules found on the surface of cells or microorganisms.

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Antigens Are

Question 31

Multiple Choice

Antigens are

A) proteins found in the blood that cause foreign blood cells to clump.
B) foreign molecules that trigger an inflammatory response.
C) proteins that consist of two light and two heavy polypeptide chains.
D) foreign molecules that trigger the generation of antibodies.

Correct Answer: