Which enzymes from the glycolysis pathway are not used by the gluconeogenesis pathway? hexokinase phosphoglucose isomerase phosphofructokinase aldolase triose phosphate isomerase glyceraldehyde-3-phosphate dehydrogenase phosphoglycerate kinase phosphoglycerate mutase enolase pyruvate kinase Which steps in the citric acid cycle generate energy currency in the cell? citrate synthase aconitase isocitrate dehydrogenase alpha-ketoglutarate dehydrogenase succinyl-CoA synthetase succinate dehydrogenase fumarase malate dehydrogenase Which reactions in glycolysis generate energy currency for the cell? hexokinase phosphoglucose isomerase phosphofructokinase aldolase triose phosphate isomerase glyceraldehyde-3-phosphate dehydrogenase phosphoglycerate kinase phosphoglycerate mutase enolase pyruvate kinase
Added by Christopher E.
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Step 1: Gluconeogenesis is the synthesis of new glucose from non-carbohydrate precursors. Show more…
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Which enzymes catalyze the steps that oxidize the carbon molecules in the intermediates? dehydrogenases kinases synthetases oxidases What is produced during the oxidation steps of the TCA pathway? ATP NADH FADH2 NADH and FADH2 ATP, NADH, and FADH2 Which enzyme is a part of both the TCA and the ETC? Citrate synthase Fumarase Isocitrate dehydrogenase Succinate dehydrogenase
Sri K.
All of the following enzymes are involved in glycolysis at some point. Given the sequential reactions in the pathway, which answer(s) list enzymes in the correct order (without skipping any steps) for that part of the pathway represented? a) glyceraldehyde 3-phosphate dehydrogenase; phosphoglycerate kinase; enolase b) hexokinase; phosphoglucoisomerase; aldolase; triose phosphate isomerase c) phosphoglycerate kinase; enolase; pyruvate kinase d) phosphoglycerate mutase; phosphoglycerate kinase; pyruvate kinase e) hexokinase; phosphoglucoisomerase; phosphofructokinase; aldolase Question 6 (1 point) Which of the following is true for BOTH the conversion of acetaldehyde to ethanol and the conversion of pyruvate to lactate? a) The reaction is catalyzed by an enzyme that contains a Rossmann fold structural motif. b) The reaction is catalyzed by a dehydrogenase. c) All of the answers are correct. d) The reaction involves transfer of a hydrogen atom.
Adi S.
Some bacteria catabolize glucose by the Entner-Doudoroff pathway, a variant of glycolysis in which glucose- 6 -phosphate is converted to 6 -phosphogluconate (as in the pentose phosphate pathway) and then to 2 -keto-3-deoxy-6-phosphogluconate (KDPG). Next, an aldolase acts on KDPG. (a) Draw the structures of the products of the KDPG aldolase reaction. (b) Describe how these reaction products are further metabolized by glycolytic enzymes. (c) What is the ATP yield when glucose is metabolized to pyruvate by the Entner-Doudoroff pathway? How does this compare to the ATP yield of glycolysis?
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