Aerobic Respiration microbiology aa.pptx

Aerobic Respiration.pptx

1. Aerobic Respiration

2. Reporters Balanquit , John Rey P. Colo, Angelica Nina V. Magdaraog , Jerome M.

3. Aerobic Respiration In aerobic respiration, a large amount of energy is released from a glucose molecule.

4. Conversion of Pyruvic Acid to Acetyl-CoA When you do not get enough O 2 , your pyruvic acid becomes lactic acid. Otherwise, when you get enough O 2, your pyruvic acid from glycolysis is converted to acetyl-CoA .  

5. Conversion of Pyruvic Acid to Acetyl-CoA NOTE : 1 glucose molecule is equal to 2 molecules of Pyruvic Acid; 1 P.A. is equal to 1 molecule of acetyl-CoA; therefore, 2 molecules of P.A. is equal to 2 molecules of acetyl-CoA and 1 glucose molecule is equal to 2 molecules of acetyl-CoA.

6. Krebs Cycle Krebs Cycle or the citric acid cycle was named after a British biochemist Sir Hans Adolf Krebs . It is the central biochemical pathway of aerobic respiration. This process occurs in the inner matrix of mitochondrion. It consists of series of dehydration , hydration , decaborxylation , and dehydrogenation processes.

7. Krebs Cycle Acetyl-CoA (2-C) + Oxaloacetic Acid (4-c)= Citric Acid (6-C)   Thus, for every molecule of acetyl-CoA, the cycle produces 3 molecules of NADH, 1 molecule of FADH 2 , 2 molecules CO 2 , 1 molecule of ATP, and 8 H 2 atoms.  

8. Krebs Cycle

9. Also called as Oxidative Phosphorylation The process called such because NADH and FADH2 are oxidized NAD+ and FAD+ respectively. Electrons or H2O+ that are removed from these reduced H2 acceptors are transferred through a series of acceptors of lower energy levels which are coenzyme Q to cytochromes b,c,a . Electron Transport Chain

10. Cytochromes are a class of proteins that function as electron transporter. As electrons flow down the energy stairs, enough energy is released to phosphorylate ADP to ATP . Finally, O2 accepts H2. this results in the f ormation of H2O , another by-product. Electron Transport Chain

11. Electron Transport Chain

12. Thank You Any question ?