Key Terms

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Last edited 25 days ago by Learn LoopHQ.

Chapter: 03. The Cell

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Cell: The basic unit of structure and function of all living organisms

Microscope: An instrument that makes the enlarged image of an object

Electron microscope: A microscope that makes highly enlarged image by interaction of electrons with the object

Micron: A unit of length equal to one thousandth part of a millimetre, i.e., 0.001 mm

Cell membrane: The covering around the cell cytoplasm; also called plasma membrane

Cell wall: Covering of cellulose outside plasma membrane in all plant cells

Nucleus: The round structure in the cell which controls all the activities of cell

Chromatin fibres: Thread-like structures in the nucleus that transfer features of parents to their children

Organelles: Structures present in the cell cytoplasm to perform different functions

Plastids: Coloured bodies; found only in plant cells

Chloroplasts: Photosynthetic organelles in plant cells only; green in colour due to presence of chlorophyll

Leucoplasts: Colourless plastids that store starch, proteins and fats

Vacuole: The central water-filled space found in plant cells

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