Chapter 9 Cellular Respiration

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Presentation transcript:

Chapter 9 Cellular Respiration

Transport of e- Hydrogen taken from glucose Dehydrogenase removes 2 H 2 e-, 1 p+  NAD+

Cellular Respiration Overview

Glycolysis Glucose is converted to 2 trioses Two steps E investment 1-5: Cost 2 ATP E payoff 6-10 + 4ATP + 2 NADH

The Investment

The Payoff

Kreb’s Cycle Pyruvate  acetyl-CoA 1 acetate creates: 3 NADH FAD ATP (substrate-level)

Kreb’s Cycle

Electron Transport Chain

Chemiosmosis

Review

Fermentation Lactic Acid Alcoholic Muscles w/o O2 Soreness and Fatigue Occurs early Alcoholic CO2 released from pyruvate making acetaldehyde Acetaldehyde reduced to Ethanol

Glycolysis Facultative anaerobes Evolutionary significance O2 present  Cellular Respiration O2 not present  Fermentation Evolutionary significance Earliest form of survival Most widespread

Fuel Sources

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