The nature and variety of living organisms

May 20th, 2015
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The nature and variety of living organisms a) Characteristics of living organisms b) Variety of living organisms a) Characteristics of living organisms 1.1 recalls that living organisms share the following basic characteristics:

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Section 1: The nature and variety of living organismsa) Characteristics of living organismsb) Variety of living organismsa) Characteristics of living organisms1.1 recalls that living organisms share the following basic characteristics:They require nutritionThey respireThey excrete their wasteThey respond to their surroundingsThey moveThey control their internal conditionsThey reproduceThey grow and developNutrition: Taking in nutrients which are organic substances and mineral ions, containing raw materials and energy for growth and tissue repair, absorbing and assimilating them.Excretion: Removal from organisms of toxic materials, the waste products of metabolism and substances in excess.Respiration: Chemical reactions that break down nutrient molecules in living cells to release energy.Sensitivity: The ability to detect or sense changes in the environment and to make responses.Reproduction: Progresses that make more of the same kind of organismGrowth: The permanent increase in size and dry mass by an increase in number of cells, cell size, or both.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:MovementRespiration

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