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Characteristics Of Living Organisms

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Characteristics Of Living Organisms
« on: August 26, 2014, 11:47:50 AM »
Characteristics Of Living Organisms

 In order to identify living organisms, scientists listed 7 characteristics which all living organisms have:

 1. Nutrition: Taking in nutrients which are organic substances and mineral ions, containing raw materials and energy for growth and tissue repair, absorbing and assimilating them.
2. Excretion: Removal from organisms of toxic materials, the waste products of metabolism and substances in excess.
3. Respiration: Chemical reactions that break down nutrient molecules in living cells to release energy.
4. Sensitivity: The ability to detect or sense changes in the environment and to make responses.
5. Reproduction: Progresses that make more of the same kind of organism.
6. Growth: The permanent increase in size and dry mass by an increase in number of cells, cell size, or both.
7. Movement: An action by an organism or part of an organism that changes position or place.
The seven characteristics could be memorized by the term “Mrs. Gren”:
 
 
Movement
 Respiration
 Sensitivity
 Growth
 Reproduction
 Excretion
 Nutrition
 
 Definitions: Metabolism: Chemical reactions taking place in cells.
 Stimuli: Changes in the environment which organisms response to.
« Last Edit: August 26, 2014, 11:50:31 AM by Mr Smart »

 


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