The document discusses cellular respiration and how energy is generated and stored in living systems. It states that energy from the breakdown of nutrients like glucose and fats is captured through chemical reactions in the form of ATP, which serves as the main energy storing molecule in cells. The process of oxidative phosphorylation during biological oxidation in the mitochondria generates the majority of ATP through the electron transport chain, utilizing energy released from NADH and FADH2.

1. We have indeed created man in the best shape (Holy Quran) Lecture # 2 Biochemistry Foundation Module November-2010

2. Growth and reproduction and all other vital process depend on Hundreds of planned chemical reactions called metabolic reactions

8. Adenosine Triphosphate (ATP) is the most commonly used Energy Storing Molecule Adenine | Ribose_______P Adenosine Monophosphate ~ P ~ P High Energy Phosphate Bonds

9. Capture of Energy as ATP Adenine | Ribose_______P ~ P ~ P Energy generated by oxidation of food stuffs is utilized for the formation of High- energy phosphate bonds. ADP is converted to ATP

10. Release of energy by ATP Adenine | Ribose_______P ~ P ~ P Hydrolysis of terminal  Generates 7300 Calories. ATP is Converted to ADP

12. Release of energy by ATP Adenine | Ribose_______P ~ P + Pi Energy generated is utilized for: 1. Metabolic Reactions. 2. Muscle Contraction. 3. Heat.

13. An Overview of Energy Storage Adenine | Ribose__P Adenosine Monophosphate Adenine | Ribose__P __P Adenosine Diphosphate Adenine | Ribose__P __P __P Adenosine Triphosphate Catabolism of Nutrients CO2 + H2O Energy

14. ATP / ADP Cycle Adenine | Ribose — P ~  ~  ATP Adenine | Ribose — P ~  ADP 7300 cal/mol

21. Role of Carbohydrates, Fats, and Proteins Cellular Respiration Carbohydrates Proteins Fats Glucose Amino acids Fatty acids Glycerol CO2 + H2O + ATP (Energy)

29. Cellular Respiration Glycolysis, Oxidation of Fatty acids and catabolism of Amino acids Citric Acid Cycle NADH FADH2 Biological Oxidation ADP ATP