Arkansas Esthetician Practice Exam

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What are the basic units of life?

Tissues
Cells
Organs
Molecules

The correct answer is: Cells

Cells are considered the basic units of life because they are the smallest living components of all living organisms. Cells are responsible for carrying out all of the necessary functions of life and are responsible for the growth, reproduction, and maintenance of living organisms. Tissues (A) are made up of a group of cells, and organs (C) are formed by different types of tissues working together. Molecules (D) are even smaller components than cells and can be found within cells, but they are not considered the basic unit of life.