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Syllabus Notes 1-19-06

Syllabus Notes 1-19-06. Whee! Seriously, I know that this is hard…. It is the hardest thing we learn. If you believe that I don’t realize that… please know that I realize this is all hard… Oh, and Katie the announcement lady needs a MUTE button.

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Syllabus Notes 1-19-06

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  1. Syllabus Notes 1-19-06 Whee! Seriously, I know that this is hard…. It is the hardest thing we learn. If you believe that I don’t realize that… please know that I realize this is all hard… Oh, and Katie the announcement lady needs a MUTE button.

  2. But first a review: (facts that get lost in the details…) • Respiration breaks down food by stripping the electrons away. • All of the carbons that were in the food poofaway as carbon dioxide. • The goal of respiration is to make ATP (body’s energy). • Aerobic Respiration: requires oxygen (Krebs and Electron chain.) • Anaerobic Respiration: does not require oxygen (fermentation.)

  3. C.3.4 Explain aerobic respiration including oxidative decarboxylation of pyruvate, the Krebs cycle, NadH , the electron transport chain and the role of oxygen. • Oxidative decarboxylation of pyruvate: NAD+ takes electrons away (oxidizes) from pyruvate. One carbon escapes as CO2 (Decarboxylation.) Called the LINK reaction between glycolysis and krebs… • Krebs cycle: where electrons get taken from Acetyl CO-A (Formerly pyruvate)by NAD+ and FAD+ and more decarboxylation occurs. • E.T.Chain: Chemiosmosis occurs! NADH and FADH formed give electrons to oxygen. The H+’s that are released go through ATP synthase to make ATP

  4. One turn of the Krebs cycle yields: • 2 CO2 • 3 NADH, H • 1 FADH • 1 ATP

  5. C.3.5 Explain oxidative phosphorylation. • Oxydative phosphorylation is making ATP by chemiosmosis • Substrate-level phosphorylation is where an enzyme makes ATP (slow gluing of P to ADP) • Substrate-level occurs in Krebs and glycolysis…

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