What Is A Cell? – Definition, Structure, Types, Functions
Define a cell and describe its structure in brief.
Answer.
The cell is a basic structural unit of the living tissue.
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Cell Structure Each cell consists of a cell membrane enclosing the cytoplasm with a nucleus within it.
Thus, three structural components of a cell are:
- Cell membrane/plasma membrane
- Cytoplasm
- Nucleus
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The cell membrane (also called plasma membrane) forms the boundary of a cell and acts as a barrier between the cytoplasm and the external environment.
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The cytoplasm is a fluid material that surrounds the nucleus and is itself surrounded by a cell membrane.
It consists of a cytoplasmic matrix with organelles and inclusions suspended in it. The various metabolic activities of the cell take place in the cytoplasm.
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The nucleus is a membrane-bound structure, usually present in the center of the cell. It contains various genes that control the development, structure, and various activities of the cell.
The nuclei consist of a nuclear envelope, nuclear matrix, chromatin material, and nucleolus.
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