Which of the following is incorrect about the conversion of pyruvate and NADH to lactate and NAD+? O a. Electrons are donated by NADH O b. It occurs in the muscles during exercise Oc. Pyruvate is being reduced O d. None; all the other choices are correct
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- Since in this patient pyruvate kinase is abnormal not only is less pyruvate made but intermediates above pyruvate in the glycolytic pathway build up slowing the pathway. which of the following would be expected? A.ADP to ATP ratios would be elevated above normal. B.NADP+ would increase relative to NADPH. C.Ribulose 5-phosphate levels would decrease. D.NADH to NAD+ ratios would decrease. E.Methemoglobin levels would increase. Explanation for answer in no. 6:Why does anaerobic respiration occur during vigorious exercise?a. during anaerobic respiration, enzymes make more ATP than during aerobic exercise.b. Anaerobic respiration releases more energy from glucose tan aerobic respiration.c. There maybe insuffiecient oxyen supplied to the muscle cells.d. Carbon dioxide builds up in the respiring muscle cells.When a muscle becomes anaerobic during strenuous exercise, why is itnecessary to convert pyruvate to lactate?a. to decrease NAD and increase NADHb. to decrease NADH and increase NADc. to increase NADH and increase NADd. to decrease NADH and decrease NADe. to keep oxidative phosphorylation running
- Glycolysisa. is the breakdown of glucose to two pyruvate molecules.b. requires the input of two ATP molecules.c. produces two NADH molecules.d. does not require O2.e. All of these are correct.Imagine that NADH concentrations are made high in a cell. What is the logical result? Select all that are true below. 券 a. The rate of overall ATP production increases Ob. The rate of the TCA increases c. The rate of glycolysis increases O d. The rate of electron transport increasesWhich of the following statements about the use the NADPH generated from the pentose phosphate pathway is not true? NADPH generated from the pentose phosphate pathway is used for the synthesis of fatty acids. b. NADPH generated from the pentose phosphate pathway and cytoplasmic NADH is metabolically interchangeable. O c. NADPH generated from the pentose phosphate pathway is used for the regeneration of glutathione to its reduced state. O d. NADPH generated from the pentose phosphate pathway is used for lipid synthesis. Clear my choice
- Steps in oxidative phosphorylation involves all of the following except 11. a. The phosphorylation energy is supplied by ATP metabolism b. Electron transfer chain moves electron from NADH and FADH2 to O2 c. Phosphorylation of ADP to ATP catalyzed by ATP synthase d. Electron do not flow to oxygen unless ATP is needed 12. List factors that can activate glucokinase for glucose metabolism in the liver 13. What are the functions of macromolecules with examples? Write the general balanced equation that shows the catabolism of glucose (GLYCOSLYSIS) to ATPS, carbon dioxide, and water. Include in the equation the formation of ATP from ADP and phosphate and oxygen utilization. 14. 15. What is post-translational processing of proteins and list 3 things that can happen to the proteins synthesized at this stage:Put the following pathways in the order they occurduring aerobic respiration.a. electron transfer phosphorylationb. acetyl–CoA formationc. citric acid cycled. glycolysisWhich Molecule Is Being Reduced In The Reation Pyruvate (C3H4O3) + NADH+H+ -> Lactate (C3H6O3)+NAD+
- Mitchondrial matrix contains enzymes of: a. Pyruvate dehydrogenase b. TCA cycle enzyme c. Acyl CoA synthetase d. ATP synthase e. B-oxidation enzymesWhich of the following is incorrect about the pyruvate dehydrogenase reaction? a. It links glycolysis and the citric acid cycle O b. It is irreversible O c. It is regulated Od. It is a reductive carboxylationWhich of the following glycolytic enzymes neither produces nor consumes ATP? A. phosphofructokinaseB. triose phosphate isomeraseC. pyruvate kinaseD. phosphoglycerate kinaseE. hexokinase
