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What are called life processes?

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  • The processes  which together do this maintenance job are called life processes. 

  • A huge amount of energy is needed to prevent the damage and break-down of such processes. 

  • This type of energy comes from the outside source called food. 

  • Inside the body, breakdown of food molecules takes place by chemical means. Oxidation-reduction reactions are some common chemical means to break down such molecules.

  • The process of acquiring oxygen from outside of the body and to see it in the process of break-down of food sources for cellular needs is called respiration. 

  • In the case of unicellular organisms, there are no specific organs for taking food, gaseous exchange, or removal of wastes.

  • When chemical reactions use the carbon source and the oxygen for energy generation, they create by-products that could either be useful ( such as glucose ) or harmful ( such as nitrogenous waste) for our body. Therefore, these products needed to be removed from the body by the process called excretion 

  • To carry waste  away from cells transportation system is also required

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jainabbee.shaikh

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