Cell Structure, Function and Organisation

Cell Structure and Function

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Cell is the basic unit of life consisting of a mass of living matter called protoplasm which is a nucleus within a mass of cytoplasm bounded by cell membrane.

cell membrane

Structure

Partially permeable

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i.e with numerous pores allowing only certain small molecules to pass through

Function

Controls the movement of substance going in and out of the cell

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only allows certain substances to pass through it, and not others

Protective layer

Keeps cell content in place

Transfer chemical messages

cytoplasm

Structure

Includes organelles,various membranes and fluid in which everything is suspended in cytosol

Function

Site where chemical reaction occur

nucleus

Structure

Contain denser protoplasm called nucleoplasm

Surrounded by a double-layered membrane called nucler envelope/membrane

Contain genetic materials in strutures called chromatin threads

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During cell division, chromatin threads condenses to form highly-coiled structures called chromosomes.

Nucleolus present is involved in protein production

Function

cellulose cell wall

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plant cells only

Structure

Function

vacuole

Structure

Function

mitochondrion

Structure

Function

chloroplast

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plant cell only

Structure

Function

centriole

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animal cells only

Structure

Function

Main topic

Main topic

Main topic