The Seven Life Processes

Definitions for the seven life processes, as defined by the CIE IGCSE Biology board in the syllabus. 

Unit 1 

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Movement

An action by an organism or part of an organism resulting in a change in posistion or place.

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Respiration

A complex series of reactions, taking place in all living cells, that breaks down nutrients molecules to release energy from food.

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Sensitivity

The ability to detect stimuli and make responses.

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Growth

A permenant increase in size and dry mass by an increase in cell size or cell number or both. 

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Reproduction

Processes that make more of the same type of organism.

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Excretion

The removal from the body of toxic materials, waste products from metabolism and substances in excess of requirement. 

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Nutrition

taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them.

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