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Nutrition in amoebaAmoeba obtains itsnutrition in a heterotrophic mode. Both the anabolic and catabolic functions are carried out in the same cell.
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what is meant by anabolic and catabolic functions?
Anabolism is the set of metabolic pathways that construct molecules from smaller units. These reactions require energy. One way of categorizing metabolic processes, whether at the cellular, organ or organism level is as anabolic or as catabolic, which is the opposite. Anabolism is powered by catabolism, where large molecules are broken down into smaller parts and then used up in respiration.
Amoeba nutrition involves five steps :- 1) ingestion it is a process of taking the food in  the mouth.amoeba don't have mouth therefore food intake it may take place from any part of the body but it may usually takes place at advancing end i.e. pseudopodia. This process of obtaining food is called phygocytosis. 2) Digestion is the process of the breakdown of complex food molecules into simpler  molecules through a series of chemical reactions carried out by various enzymes. 3) absorption means taking up digested nutrient molecules into the cells of living organisms. 4) assimilation the absorbed food is synthesised into protoplasm and this is known as assimilation. 5) egestion is the removal of the undigested food is known as egestion. In amoeba egestion may occur in a any part of the body part.
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