Question

Which statements describe functions of antibodies? Select two options.

A.They maintain the cell’s shape.
B.They regulate cell processes.
C.They protect the body from infectious agents.
D.They signal the immune system to destroy pathogens.
E.They speed up biochemical reactions.
F.They send electrical signals.

Answer 1

Answer:

option C

option D

Explanation:

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Answer 2

Answer:

The proteins that are produced in response to an antigen are called antibodies. It is a Y-shaped protein produced by white blood cells called B lymphocytes (or B cells) that the immune system uses to recognize and destroy foreign substances or pathogens, called antigens. Example of antigens include microorganisms (parasites, bacteria, fungi, and viruses) and chemicals. Therefore, antibodies protect the body from infectious agents. So, the correct option are (c) and (d).

Explanation:

When an foreign substance enters the body, the immune system recognizes it as foreign because the molecules on the antigen's surface differ from those found in the body. To eliminate the invader, the immune system employs a number of mechanisms, one of which is the production of antibodies. Antibodies attack antigens by binding to them. The binding of an antibody to a toxin, for example, can neutralize the poison simply by changing its chemical composition. Antibodies have the ability to render some invading microbes immobile or stop them from penetrating body cells by attaching to them. That's how the antibodies protect the body from infectious agents.

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