Which term is the basic unit of life?

Which term is the basic unit of life?

• A. Cells
• B. Tissues
• C. Organs
• D. Systems

Answer: (A)

Cells are the basic unit of life because they can carry out all the essential processes that sustain living organisms—metabolism, growth, reproduction, and response to the environment. They’re the smallest units that can function independently to sustain life, and organisms are built from these cells working together. Tissues are made of similar cells, organs are composed of different tissues, and systems are groups of organs that perform broad bodily functions. In skin science, recognizing that cells make up the epidermis and other skin structures helps explain how the skin renews itself, forms a barrier, and responds to cosmetic treatments. So the most fundamental unit of life is the cell.

Cells are the basic unit of life because they can carry out all the essential processes that sustain living organisms—metabolism, growth, reproduction, and response to the environment. They’re the smallest units that can function independently to sustain life, and organisms are built from these cells working together. Tissues are made of similar cells, organs are composed of different tissues, and systems are groups of organs that perform broad bodily functions. In skin science, recognizing that cells make up the epidermis and other skin structures helps explain how the skin renews itself, forms a barrier, and responds to cosmetic treatments. So the most fundamental unit of life is the cell.