LIFESCI 7A Lecture 4: Week 3-4- Cellular Respiration Notes
Document Summary
Cellular respiration: glucose is broken down into co2 and water to generate useable energy in the form of atp. Photosynthesis: light energy drives transformation of water and co2 into glucose. Big picture: cell converts food molecules (glucose, fats, proteins) into co2, free energy is released, transformed, and used to make atp from adp + pi. In citric acid cycle, more energy is transferred to energy management molecules as acetyl-coa is oxidized. Protons pumped slide--protons are pumped as e- ow because as h+ go from matrix to intermembrane space, they"re going from low to high concentration. it takes energy to move them against the gradient. Reducing pyruvate allows nadh to be recycled back toc nad+ so that glycolysis can proceed and generate 2 atp per glucose. Glucose, fatty acids, proteins are catabolized into smaller units, releasing energy stores in their bonds to power cell"s work. Cellular respiration uses chemical energy stored in molecules such as carbohydrates and lipids to produce atp.
