Question

Which statement correctly describes the immune response?

The third line of defense involves the action of specialized cells.

The first line of defense is intact skin.

The second line of defense involves the immune system recognizing foreign invaders.

All of the above are correct.

Answer 1

The statement which correctly describes the immune response is the third line of defense involves the action of specialized cells.

The third one is the specific resistance which relies on antigens found in foreign microbes. These antigens are proteins or special substances that serve as the stimulus to produce an immune response.