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Adapt + Physio T1

Term 1 of Physiology and Adaptation

QuestionAnswer
What are the three aims of digestion? 1) to intake energy for metabolism, 2) to provide Organic compounds for growth etc, 3) Intake of essential nutrients.
What are essential nutrients? Nutrients (such as vitamins etc) which cannot be synthesised by the organism but are required (Mg is needed as a cofactor etc).
Two major elements required for the synythesis of almost all organic compounds used? Carbon and Nitrogen
Not all material is usable by an organism, some is, demonstrate this simply: Indigestible material is excreted as Faeces (can't be broken down on first pass through), Unmetabolisable material is excreted as urine (typically excess), Metabolisable energy.
Metabolisable energy is used in two specific ways, what are they? Specific Dynamic Action (SDA) is the increase of the thermal activity of an organism after ingestion (excess energy released as heat by respiring cells?) And Net Energy for metabolism.
Created by: mjw559
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