Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Which of the following products of the non-oxidative stage of PPP is an intermediate in the glycolysis pathway?
Group of answer choices
Glyceraldehyde-3-phosphate
Xylulose-5-phosphate
Erythrose-4-phosphate
Ribose-5-phosphate
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- Below is an image of the Krebs cycle: acetyl-CoA oxaloacetate COASH H20 NADH NAD* H20 malate citrate fumarate isocitrate FADH2 NAD* CO2 FAD АТР NADH + ADP succinate GTP NAD+ a-ketoglutarate H20 GDP NADH + CO2 COASH succinyl CoA COASH Consider the conversion of succinate to fumarate, which is coupled with the production the electron carrier FADH2. If this reaction was NOT coupled with the production of FADH2 (and only catalyzed the conversion of succinate to fumarate), how would this impact ATP production through cell respiration? OATP production would stop because no high energy electron carriers would be produced ATP production would still occur, but there would be a much lower ATP yield because a large number of electron carriers are no longer being made ATP production would stop because without FADH2 we will no longer have electrons moving through the electron transport chain ATP production would still occur, but there would be a slightly lower ATP yield because a small number of…arrow_forwardWhich citric acid cycle enzyme utilizes a similar reaction mechanism to pyruvate dehydrogenase? O Malate dehydrogenase Isocitrate dehydrogenase O Alpha-ketoglutarate dehydrogenase Succinate dehydrogenasearrow_forwardWhich of the following glycolytic enzymes must consume ATP during phosphorylation of its preferred substrate molecule? phosphoglycerate mutase pyruvate kinase succinate dehydrogenase hexokinase phosphoglycerate kinasearrow_forward
- Each of the following enzymes are similar in that they are all regulation points for the pathway/cycle they operate in ... except for one enzyme. Which of the following is not a regulated enzyme? Pyruvate carboxylase Transketolase Glycogen phosphorylase Citrate Synthase Phosphofructokinase Acetyl CoA carboxylase 888888arrow_forwardWhich of the following conditions is most likely to force a muscle cell to metabolize glucose anaerobically(fermentation) under normal oxygenation ? - Glyceraldehyde-3-phosphate dehydrogenase deficiency - Lactate dehydrogenase deficiency -Pyruvate kinase deficiency -Aldolase deficiency - Cytososic Glycerol-3-phosphate dehydrogenase deficiencyarrow_forwardConsider an alternative glycolysis pathway that starts with the phosphorylation of glucose to give glucose-6-phosphate. This (hypothetical) pathway exists in a (hypothetical) organism that does not express glucose-6-phosphate isomerase. Instead, the next step of this hypothetical pathway is a Glucose-6-Phosphate Aldolase. Draw the product or products that would be obtain by the reaction of Glucose – 6 – Phosphate with Glucose – 6 Phosphate Aldolase. Assume the reaction is completely irreversible. Explain in 1-3 sentences how you obtained your answerarrow_forward
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