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Basic components of a cell

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What are the basic components of a cell?

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What are the basic components of a cell?
(Use has been made of material at the following site in answering this question: http://www.cod.edu/people/faculty/fancher/CellStructure.htm )
The basic components of a cell are:
1. The cell wall: It is found in plant cells. Plant cells have cell walls in addition to plasma membranes, not instead of plasma membranes. Plant cell walls are composed all or partially of a carbohydrate called cellulose. The primary function of the cell wall is support, and in conjunction with the central vacuole, to create stiffness in plant structures like leaves.
2. The plasma membrane: It serves as a diffusion barrier between the cell and its environment. All living cells have plasma membranes. A "diffusion barrier" prevents the loss of cellular materials by interfering with the physical tendency of molecules to spread out. It also prevents many substances from diffusing into the cell. And it also controls the movements of various substances and objects into and out of the cell.
3. Cytoplasm: Cytoplasm is the fluid ...

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