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Kin110_Chapter 3-6 Metabolism.docx

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Biomedical Physio & Kines
BPK 110
Gina Whitaker

Metabolism Ch 3 p 90-91 Ch 4 111-112 Ch 5 146-147 Ch 6 178-179 How macronutrients provide energy Energy-fuel for work Energy source Chemical energy in carbohydrates, fat, protein Transferring food energy to cellular energy Stage 1: digestion, absorption, transport Stage 2: breakdown of molecules Stage 3: transfer of energy to a form cells can use Metabolism-the sum of all the chemical reactions that take place in a living organism Catabolism-reactions that break down compounds into small units Anabolism-reactions that build complex molecules from smaller ones Key Energy Players-ATP ATP is the body’s energy currency Form of energy cells use Our body uses ATP as it is made; it cannot be stored The ADP–ATP Cycle When extracting energy from nutrients, the formation of ATP from ADP + P captur
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