LIFE 210 Study Guide - Midterm Guide: Acetyl-Coa, Citric Acid Cycle, Intermembrane Space
Document Summary
Taking food sources and breaking them down into all the macromolecules in order to make energy. Can"t just release all the energy contained within the food molecules in one shot because it has too much energy to do so. Glycolysis anaerobically (no oxygen needed) converts glucose to pyruvate (2 3-carbon molecules) in cytosol (cytoplasm) 2 atp go in, 2 nadh and 4 atp go out in order to get 2 pyruvates. Citric acid cycle (aka krebs cycle or tca cycle) harvest energy from pyruvate in mitochondria. Breaks down citrate (6c) to a 4c molecule. Cholesterol and fatty acids and amino acids can come out of the process. Don"t need sugar to get acetyl coa. Nad+ and nadh comes out, releasing co2 and giving acetyl. Coa (3-carbon molecule of pyruvate becomes a 2 carbon molecule carbon disappeared as co2) Acetyl coa goes into citric acid cycle and produces: Net= 4 nadh, 1 atp, and fadh2.
