22 When glucose gets into a cell, GLYCOLYSIS breaks it down. occurs in the cytoplasm.chemical reactions use enzymesanaerobic reaction = No Oxygen needed!net yield 2 pyruvate from 1 glucose moleculemakes 4 ATP, but uses 2 ATP so it Releases only 2 ATP!
26 Overview of cellular respiration mitochondrionCellular Respiration overview, focus on ETC
27 Aerobic RespirationPyruvate from glycolysis is converted by enzymes to acetyl CoA which enters the mitochondrial matrix.Krebs cycle (Citric Acid cycle): Chemical reactions use enzymes.in mitochondrial matrixmakes 2CO2, 1 ATP, 3 NADH, 1 FADH2
30 Electron Transport Chain Last step of aerobic respirationHappens across inner mitochondrial membrane.High energy electrons and H+ from NADH and FADH2 in Krebs convert ADP to ATP through chemiosmosis.Overall, makes 34 ATP from one glucose molecule!!!Electron Transport Chain
34 Anaerobic Respiration If oxygen is not available, regenerates NAD+ for glycolysisoccurs in cytoplasm2 types of fermentation:lactic acid fermentation (animals)pyruvate to lactic acidstrenuous exercise = sore muscles!alcohol fermentation (yeast, bacteria)yeast and some bacteriapyruvate to ethyl alcoholAnaerobic Respiration