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Cells of the immune system are able to respond to the
presence of invading organisms because they
recognize the
A) antigens present on the invaders
B) antibodies present in invading pathogens
C) DNA pattern in the nuclei of viruses
D) antibiotics released from microbes

Respuesta :

shadow18851

Answer:

A) antigens present on the invaders

Explanation:

Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens