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Glycolysis Quiz Review Krebs cycle Notes Electron Transport Chain/chemiosmosis Fuels “Prejudices, it is well known, are most difficult to eradicate from the heart whose soil has never been loosened or fertilized by education; they grow there, firm as weeds among the stones.” Charlotte Brontë.
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Glycolysis Quiz Review Krebs cycle Notes Electron Transport Chain/chemiosmosis Fuels “Prejudices, it is well known, are most difficult to eradicate from the heart whose soil has never been loosened or fertilized by education; they grow there, firm as weeds among the stones.” Charlotte Brontë To learn about glycolysis and carbohydrate metabolism. Title: Anat & Phys 5/3/07 Class Topics Objectives: Friday, January 3, 20207:22 PM
Class Assignments What By When • Glycolysis quiz 5/3/07 • Metabolism test 5/9/07 • Due this class period • Due next class period • Due in the future
Glycolysis Quiz • Review the Krebs cycle and chemiosmosis
Krebs Cycle Review • What enters and what leaves?
Totals per molecule of glucoseRemember - pyruvate has 3 carbons • ATP _______ • NADH _______ • FADH2 _______ • Where’s the oxygen? CO2____
Chemiosmosis • Electron Transport Chain (system) • Occurs on the inner membrane of the mitochondrion • Takes high energy electrons from NADH and FADH2 and transfers it to ATP is the process of making water from excess Hydrogen ions, oxygen, and electrons (depleted of energy)
Animations • University of Connecticut • Smith College • Virtual Cell Animation • Concepts in Biochemistry
Total Energy • +4 ATP from glycolysis • -2 ATP to initiate glycolysis • 2 ATP from TCA* cycle • 4 ATP from NADH of glycolysis • 24 ATP from NADH of TCA cycle • 4 ATP from FADH2 of TCA cycle
Fuels • Carbohydrates • starches and sugars into glucose - released into blood • muscles take in glucose & use or store as glycogen • Excess carbs are stored as fat • liver stores glycogen for brain • glycogen can only be formed from carbohydrates
Fuels • Protein • gluconeogenesis • formation of glucose from amino acids • not a main source of energy • Atkins diet • ketosis
Fuels • Fats • at least twice as much energy as carbs per gram • released from adipose tissue and sent to area needing energy • Brain cannot use fats as fuel - only glucose