Which of the following best defines the basic unit of life in living organisms?

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Multiple Choice

Which of the following best defines the basic unit of life in living organisms?

Cells are the basic unit of life; they are the smallest structures capable of carrying out all life processes such as metabolism, growth and response to the environment. When cells join, they form tissues, which in turn build organs and organ systems. The other terms describe larger biological levels rather than the fundamental building block. In skincare terms, the health and turnover of epidermal cells drive the skin’s renewal and barrier function, so understanding cells helps explain how products influence skin condition.

Cells are the basic unit of life; they are the smallest structures capable of carrying out all life processes such as metabolism, growth and response to the environment. When cells join, they form tissues, which in turn build organs and organ systems. The other terms describe larger biological levels rather than the fundamental building block. In skincare terms, the health and turnover of epidermal cells drive the skin’s renewal and barrier function, so understanding cells helps explain how products influence skin condition.

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