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What is the immune system?

A. The group of cells and organs that protect the body from disease.

B. A group of cells that undergoes apoptosis to protect the body.

C. A group of organelles that digest particles that invade the cells.

D. The group of cells and organs that turn food into energy for the body.

User Kqlambert
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2 Answers

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Answer:B

Explanation:The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease. ... Even simple unicellular organisms such as bacteria possess a rudimentary immune system in the form of enzymes that protect against bacteriophage infections.

User Rasha Elsayed
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3 votes

Answer:

a .

Step-by-step explanation:

a group of cells and organs that protect the body from disease

User Tnotstar
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