Red Seal Cosmetology Practice Exam

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What are the basic units of all living things?

  1. Atoms

  2. Molecules

  3. Cells

  4. Organisms

The correct answer is: Cells

Cells are the basic units of all living things because they are responsible for the essential functions of life. They make up all organisms, from single-celled organisms to complex multi-cellular organisms. Option A, atoms, are the basic units of matter but are not considered living things by themselves. Option B, molecules, are made up of atoms and can be found in living things but are not considered the basic units. Option D, organisms, are a combination of multiple cells working together and are not considered the smallest unit of life.

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