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Class Topics

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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Class Topics

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  1. 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

  2. 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

  3. Glycolysis Quiz • Review the Krebs cycle and chemiosmosis

  4. Krebs Cycle Review • What enters and what leaves?

  5. Totals per molecule of glucoseRemember - pyruvate has 3 carbons • ATP _______ • NADH _______ • FADH2 _______ • Where’s the oxygen? CO2____

  6. 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)

  7. Animations • University of Connecticut • Smith College • Virtual Cell Animation • Concepts in Biochemistry

  8. 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

  9. 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

  10. Fuels • Protein • gluconeogenesis • formation of glucose from amino acids • not a main source of energy • Atkins diet • ketosis

  11. 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

  12. Food Pyramids

  13. From: http://atkins.com/Archive/2004/2/10-121449.html

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