10. As one molecule of acetyl CoA works its way completely through the Kreb\'s c
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Question
10. As one molecule of acetyl CoA works its way completely through the Kreb's cycle, there is a yield of a. 1 ATP b. 1 FADH2 c. 3 NADH+H+ d. all of the above e. none of the above 11. Which is the correct order of events in the oxidation of a glucose molecule? a. glycolysis pyruvate oxidation b. Krebs cycle Electron Transport System c. glycolysis d. pyruvate oxidation Kreb's cycle Electron Transport Kreb's cycle Electron Transport System pyruvate oxidation Transport System Kreb's Cycle System glycolysis glycolysis pyruvate oxidation Electron 12. What does the following illustration show? a. b. c. d. pyruvic acid oxidation Kreb's cycle Electron Transport System glycolysis CYTOSOL MITOCHONDRION NAD NADH H S-COA H, Acetyl CoA Pyruvate Coenzyme A Transport protein 13. The destrons moving of c is wod to: a. break down glucose within the mitochondria b. produce the oxygen end product c. pump H' across mitochondrial membranes d. release energy molecules anaerobicallyExplanation / Answer
10) D. all of the above
The two private molecules produced degradation of one glucose molecule via glycolysis do not directly enter into the Kreb’s cycle for further degradation. First, they are converted to acetyl coenzyme A by the enzyme called pyruvate dehydrogenase which is degraded by Krebs cycle enzymes. During this conversion, two NADH molecules are generated from two pyruvate molecules and two CO2.
In Krebs cycle the acetyl coenzyme A combine with one oxaloacetate molecule produces citrate. The citrate molecule degraded and an oxaloacetate molecule is regenerated at the end of Krebs cycle. During Krebs cycle, 1 GTP (=1 ATP), 1 FADH2, 3NADH2 are produced from one molecule of private.
11. a. glycolysis => pyruvate oxidation => Krebs cycle => Electro transport system
The glucose degraded in aerobic cellular respiration in four stages
Stage1: occurs in the cytosol
Glycolysis: In the cytoplasm of a cell, the glucose is degraded by the glycolysis pathway. One glucose molecule (6 Carbon compound) enters into glycolysis produces two molecules of pyruvate (3 Carbon compound). During the degradation of glucose molecule produces two molecules of NADH and four ATPs but two ATPs are utilized for glycolysis process so the net gain is two ATPs at the end of glycolysis. Finally, only two ATP molecules are produced from degradation of one molecule of glucose by glycolysis pathway.
Stage2: occurs in Mitochondria
Formation of acetyl coenzyme A: The two private molecules produced in glycolysis do not directly enter into the Kreb’s cycle for further degradation. First, they are converted to acetyl coenzyme A by the enzyme called pyruvate dehydrogenase which is degraded by Krebs cycle enzymes. During this conversion, two NADH molecules are generated from two pyruvate molecules and two CO2.
Stage3: occurs in Mitochondria
Krebs cycle: it is also called citric acid cycle or tricarboxylic acid cycle. The acetyl coenzyme A combine with one oxaloacetate molecule produces citrate. The citrate molecule degraded and oxaloacetate molecule is regenerated. During Krebs cycle, two GTP, two FADH2, six NADH2 and 2 Co2 are produced from two molecules of private.
Stage4: occurs in Mitochondria
Electron transport chain: it is located in the inner mitochondrial membrane with four protein complexes which carry electrons from the NADH2 and FADH2 to terminal oxygen and produces the NAD+ and ATP. Generation of ATP by the oxidation of NADH2 and FADH2 by electron transport chain is called oxidative phosphorylation. During the aerobic respiration total, 36 ATPs are produced.
12 .A. pyruvate oxidation
pyruvate oxidation: The two private molecules produced in glycolysis do not directly enter into the Kreb’s cycle for further degradation. First, they are converted to acetyl coenzyme A by the enzyme called pyruvate dehydrogenase which is degraded by Krebs cycle enzymes. During this conversion, two NADH molecules are generated from two pyruvate molecules and two CO2.
13. Pump H+ across the mitochondrial membrane.
The reducing equivalents (NADH2 and FADH2) generated in glycolysis, the formation of acetyl coenzyme A, Kreb’s cycle are oxidized by the donating electrons to the oxygen by the four electron carrier complexes of electron transport system. During their oxidation by the four complexes of ETS, the H+ move from matrix to intermembrane space of mitochondria.
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