. During acrobic breakdown of glucose, the amount of ATP synthesized by complete
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. During acrobic breakdown of glucose, the amount of ATP synthesized by complete oxida equates to what fraction of the total energy harbored by a glucose molecule? A. ~1% B. ~ 5% C. ~40% D. ~ 94% E.-100% 8. The addition of phosphate group to a substrate is called phosphorylation and it is carrie enzymes known as A. Kinases. B. Phosphatases C. Translocases D. Transferases E. Isomerases 9. Which of the following are considered extracellular messengers that can trigger a signal tr pathway to influence metabolic reactions? A. Hormones B. Pheromones C. Growth factors D. Neurotransmitters E. All of the above 10. The most common second messenger in mammalian cells is A. ADP B. ATP C. cAMP D. NADH E. FADH2 11. Glycolysis happens A. In presence of O2 only B. In absence of O2 only C In presence or absence of O D. In presence of CO2 E. None of the above with 2 molecules of elucose, glycolysis leads to the A. 1 CO; molecule B. 2 CO2 molecules C. 4 CO2 molecules D. 8 CO molecules B None of the above production ofExplanation / Answer
7. Option E is correct. Aerobic oxidation of glucose produces maximum no. of ATP and thus the correct answer is 100%.
8. Option A is correct. Kinases are group of enzyme responsible for phosphorylation of target molecule. For example hexokinase.
9. Option E is correct. All are extracellular messengers. They bind to the cellular receptor and causes the activation of intracellular messenger.
10. Option C is correct. The most common intracellular messenger is cAMP because most of the signaling pathway occurs via cAMP.
11. Option C is correct. Glycolysis occurs both aerobically and anaerobically. Aerobically it produces pyruvate and anaerobically it produces lactate.
12. Option E is correct. The net product of glycolysis is 2 molecules of ATP, 2 molecules of NADH and 2 molecules of pyruvate. No any CO2 molecule is produced.
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