Cell Structure (summary)

Cells are the building blocks of living things. They are derived from other cells by division and they are the site of all the chemical reactions of life (metabolism). A cell is the smallest unit of all the unit of organisation we can say alive .

Cells are extremely small . They are measured in units of a thousandths of a millimetre and they must be viewed by microscopy.

The cells of plants and animals have common features, including a nucleus,cytoplasm and cell membrane. The distinctive features of plant cells are a cellulose cell wall, the presence of large permanent vacuoles and the possible presence of chloroplasts,the site of photosynthesis .

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