Protoplasm

Protoplasm [ Biology ]

Dictionary of botanic terminology - index of names

The viscous translucent material that makes up the substance of all living cells.

Fundamental material composing all living things. Protoplasm which exists in all plants and animals in the small units called cells, is mainly (85-90 percent) water and also contains proteins, fatty substances and inorganic salts including enzymes and organized particles which carry out specific functions within the cell. It is always enclosed by a thin surface membrane that controls the passage of materials into and out of the cell. It displays the general properties associated with life-the capacity to respond to stimuli and the ability to perform the essential physiological functions. In the plants it represent the living portion of a cell as opposed to the non-living cell wall.

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