Which of the following metabolic processes can occur without a net influx of energy from some other process? 1. ADP + Pi ATP + H2O 2. C6H12O6 + 6 O2 6 CO2 + 6 H2O 3. 6 CO2 + 6 H2O C6H12O6 + O2 4. amino acids protein 5. glucose + fructose sucrose
During glycolysis, for each mole of glucose oxidized to pyruvate 1. six molecules of ATP are used and six molecules of ATP are produced. 2. two molecules of ATP are used and two molecules of ATP are produced. 3. two molecules of ATP are used and four molecules of ATP are produced. 4. two molecules of ATP are used and six molecules of ATP are produced. 5. four molecules of ATP are used and two molecules of ATP are produced. Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis? What pathways generate reduced electron carriers? Which of the following statements about the chemiosmotic synthesis of ATP is correct?
5. Chemiosmotic ATP synthesis requires oxygen. In cellular respiration, the energy for most ATP synthesis is supplied by 1. high energy phosphate bonds in organic molecules. 2. converting oxygen to ATP. 3. generating carbon dioxide and oxygen in the electron transport chain. 4. a proton gradient across a membrane. 5. transferring electrons from organic molecules to pyruvate Drugs nown as uncouplers facilitate diffusion of protons across the membrane. When such a drug is added, what will happen to ATP synthesis and oxygen consumption, if the rates of glycolysis and the citric acid cycle stay the same?