The Cell — Flashcards

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A cell is the structural and functional unit of all living organisms, except viruses (which are acellular). Protozoa, Euglena and bacteria are unicellular organisms, so they are cells too. All importa…

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A cell is called the basic unit of life because all metabolic activities are performed by cells. It is the smallest living unit that can carry out essential life processes and build up the body of a l…

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The cell wall is the outermost boundary of a plant cell. It is non-living, freely permeable, and mainly made of cellulose. It gives shape, rigidity, and protection to the cell.

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The cell wall maintains the shape of the cell, provides rigidity, and prevents the cell from bursting when it becomes turgid due to endosmosis.

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The cell membrane, also called plasma membrane or plasmalemma, is a living, selectively permeable membrane made of lipid and protein. It provides shape to the cell, regulates the movement of substance…

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Cell wall is non-living, freely permeable, and present only in plant cells. Cell membrane is living, selectively permeable, and present in both plant and animal cells. The cell wall is outside the cel…

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Cytoplasm is a crystallo-colloidal solution present between the cell membrane and the nucleus. It contains enzymes for metabolic reactions such as glycolysis and holds many organelles in suspension.

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Cytoplasm provides a medium for many metabolic reactions, including glycolysis. It also suspends cell organelles and helps in the smooth functioning of the cell.