Final answer:
A cell is the basic unit of life and plays a crucial role in the functioning of all living organisms.
Step-by-step explanation:
A cell is the basic structural and functional unit of all living organisms. It is the smallest unit of life that can perform all the necessary functions for survival.
The importance of cells lies in their ability to carry out vital processes such as metabolism, growth, reproduction, and response to stimuli. Cells are responsible for the formation of tissues, organs, and organ systems in multicellular organisms.
For example, in the human body, different types of cells perform specific functions. Nerve cells transmit electrical signals, muscle cells contract to produce movement, and red blood cells carry oxygen to different parts of the body.
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