Glycolysis

Glycolysis - G lycolysis Glycolysis = sugar splitting -...

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Glycolysis Glycolysis = sugar splitting - Glucose (6 carbons) is split into 2 3-carbon sugars which are oxidized - Their atoms are rearranged to form 2 pyruvates Glycolysis can be divided into 2 phases: energy investment & energy payoff - Energy investment = cell spends ATP - Energy payoff = ATP is produced by substrate level phosphorylation and NAD+ is reduced to NADH by electrons released from the oxidation of glucose Substrate level phosphorylation – When an enzyme transfers a phosphate group from a substrate molecule to ADP, rather than adding an inorganic phosphate to ADP as in oxidative phosphorylation The net energy yield from glycolysis, per glucose molecule is 2 ATP plus 2 NADH No CO2 is released during glycolysis Glycolysis occurs whether or not oxygen is present - If oxygen is present, the chemical energy stores in pyruvate and NADH can be extracted by the critic acid cycle and oxidative phosphorylation 10 Steps: ENERGY INVESTMENT PHASE 1. Glucose [hexokinase]
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This note was uploaded on 10/24/2010 for the course BIO 1101 at Cornell.

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Glycolysis - G lycolysis Glycolysis = sugar splitting -...

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