9-1 Chemical Pathways Pg. 221

A. Chemical Energy and Food 1. A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1°C.

A. Chemical Energy and Food 2. Glycolysis is a pathway that releases a small amount of energy.

B. Overview of Cellular Respiration 1. Cellular Respiration is the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen.

B. Overview of Cellular Respiration Think about it……. Reactants Products Where do the products go?

B. Overview of Cellular Respiration

C. Glycolysis 1. The process where 1 molecule of glucose is broken in half, making 2 molecules of pyruvic acid (3-carbon compound).

C. Glycolysis 2. The cell needs to put in 2 ATP to make 4 ATP. The Profit is 2 ATP.

C. Glycolysis 3. NADP+ accepts 2 high energy electrons and carries them until they are transferred to other molecules.

Glucose atp glycolysis pyruvic acid

D. Fermentation 1. Fermentation releases energy from food by making ATP without Oxygen. 2. Anaerobic means “without air”.

D. Fermentation 3. Types of fermentation: Alcoholic and Lactic a. Alcoholic Fermentation (causes bread to rise. Pyruvic Acid + NADH  Alcohol + CO2 + NAD+

D. Fermentation b. Lactic Acid Fermenation (Produced in muscles when there is not enough O2 ) Pyruvic Acid + NADH  Lactic Acid + NAD+

Exit Slip Summarize Cellular Respiration. Describe the relationship between photosynthesis and cellular respiration.