Cellular Respiration 8.3

I. Cellular Respiration A.Cellular Respiration- The process that breaks down food molecules (glucose) into ATP 1. Takes place mostly in the mitochondria

I. Cellular Respiration B. Aerobic- Requires oxygen C. Anaerobic- Does NOT require oxygen

I. Cellular Respiration D. 3 Stages 1. Glycolysis 2. Citric Acid Cycle 3. Electron Transport Chain a) Oxygen is the final electron acceptor required to start ETC

I. Cellular Respiration See overhead for charts on glycolysis, acetyl coA formation, citric acid cycle and electron transport chainglycolysis, acetyl coA formation, citric acid cycle

I. Cellular Respiration See overhead for charts on glycolysis, acetyl coA formation, citric acid cycle and electron transport chainglycolysis, acetyl coA formation, citric acid cycle

II. Fermentation A.Occurs during times of intense exercise until oxygen is available again

II. Fermentation B. Lactic Acid Fermentation 1. Glucose is converted pyruvic acid 2. Pyruvic acid is converted to lactic acid a. Causes muscle fatigue 3. 2 ATP are produced

II. Fermentation 4. Anaerobic 5. Takes place in mitochondria

II. Fermentation C. Alcoholic Fermentation 1. Glucose is converted to pyruvic acid 2. The pyruvic acid is broken down into CO2 and alcohol 3. 2 ATP are created

II. Fermentation 4. Anaerobic 5. Takes place in mitochondria of yeast

II. Fermentation 4. Alcoholic fermentation is used in: a. ethanol production b. bread baking c. beer & wine 5. Yeast do the fermentation

RECAP -What is the goal of cellular respiration? -What are the 3 stages of cellular respiration? -What are the beginning reactants and ending products of each stage?

RECAP -Why is oxygen important in respiration? -What is the difference between lactic acid fermentation and alcoholic fermentation?