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Chap 7 Respiration

Respiration

TermDefinition
Autotrophs Able to produce their own organic molecules through photosynthesis
Heterotrophs Live on organic compounds produced by other organisms
Oxidations a series of reactions
Dehydrogenations lost electrons are accompanied by protons
redox reactions electrons carry energy from one molecule to another
Nicotinamide adenosine dinucleotide (NAD+) An electron carrier NAD+ accepts 2 electrons and 1 proton to become NADH Reaction is reversible
Aerobic respiration Final electron receptor is oxygen (O2)
Anaerobic respiration Final electron acceptor is an inorganic molecule (not O2)
Fermentation Final electron acceptor is an organic molecule
2 mechanisms for synthesis Substrate-level phosphorylation Transfer phosphate group directly to ADP During glycolysis Oxidative phosphorylation ATP synthase uses energy from a proton gradient
Glycolysis Converts 1 glucose (6 carbons) to 2 pyruvate (3 carbons) 10-step biochemical pathway Occurs in the cytoplasm Net production of 2 ATP molecules by substrate-level phosphorylation 2 NADH produced by the reduction of NAD+
Created by: heardde
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