Multiple choice

Basic unit of the human body is

  1. tissue

  2. nerve

  3. muscle

  4. cell
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cells are the smallest living units that make up all living organisms, including humans. Tissues, nerves, and muscles are all composed of cells, making cells the fundamental building block. The human body contains trillions of cells working together.

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