Summary of Cell Respiration

University:
Cameron University
Course:
1004 | General Biology
Academic year:

2023
Views:

301

Pages:

1
Author:

GalacticGuru

Cell Respiration Define cell respiration • The controlled release of energy from organic compounds in cells to form ATP • Chemical equation: C6H12O6 + 6O2 + (36 ADP + 36 Pi) → 6CO2 + 6H2O + 36 ATP Outline the process of glycolysis • Glycolysis is the breakdown of glucose (6C) into two molecules of pyruvate (2 × 3C) • Glycolysis occurs in the cytosol and results in a small yield of ATP (net gain = 2 ATP) • Can occur via either an anaerobic (O2 absent) or aerobic (O2 present) pathway Summary of cell respiration anaerobic No O2 glycolysis glucose ethanol + CO2 (plants) pyruvate O2 2 ATP lactic acid (animals) aerobic CO2 + H2O + 34 ATP Outline anaerobic respiration Outline aerobic respiration • Occurs in the absence of oxygen • Occurs in the presence of oxygen • Occurs in the cytosol of the cell • Occurs in the mitochondria of the cell • Results in a small yield of ATP: • Results in a large yield of ATP: - 2 ATP molecules from glycolysis - 2 ATP molecules from glycolysis - 2 ATP molecules from Krebs Cycle • Results in the formation of: - 32 ATP molecules from ETC - lactic acid (animal cells) - ethanol + CO2 (plant cells = fermentation) Draw and label a mitochondrion intermembrane space outer membrane ribosomes (70S) inner membrane matrix cristae • Results in the formation of: - carbon dioxide (CO2) + water (H2O)