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Homeanswers_7-11 - Gluconeogenesis and the pentose...

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Click to edit Master subtitle style 1/9/11 Gluconeogenesis and the pentose phosphate pathway
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1/9/11 Which of the following compounds cannot serve as the starting material for the synthesis of glucose via gluconeogenesis? Fructose l -ketoglutarate acetate oxaloacetate
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1/9/11
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1/9/11 Which of the following compounds cannot serve as the starting material for the synthesis of glucose via gluconeogenesis? Fructose l -ketoglutarate acetate oxaloacetate
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1/9/11 An increase in the cytosolic concentration of which of the following will increase flux through the pentose phosphate pathway? glucose NADP+ NADPH Ribulose-5-phosphate
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1/9/11 Section 16.5: “Regulation of the pathway is simply by product demand; removal of NADPH regenerates NADP and thus pulls the pathway forward.” ANSWER: NADP+
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1/9/11 Pyruvate carboxylase could be expected to be inhibited by: glucose acetyl CoA ATP ADP Fructose-2,6-bisphosphate
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1/9/11 Glucose: NOT in the mitochondria Acetyl CoA: Activates PC ATP: PC is ATP-dependent F-2,6-bp: Not in mitochondria ANSWER: ADP
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1/9/11 Oxaloacetate produced from pyruvate carboxylase: Is reduced to malate. Continues gluconeogenesis in the mitochondria. Diffuses out of the mitochondria to continue gluconeogenesis. Is paired with biotin to be pumped
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1/9/11
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1/9/11 Oxaloacetate produced from pyruvate carboxylase: Is reduced to malate. Continues gluconeogenesis in the mitochondria. Diffuses out of the mitochondria to continue gluconeogenesis. Is paired with biotin to be pumped
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1/9/11 The pentose phosphate pathway is responsible for generating factors and precursors for which of the following: nucleotides amino acids reducing equivalents all of the above
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1/9/11
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1/9/11 The pentose phosphate pathway is responsible for generating factors and precursors for which of the following: nucleotides amino acids reducing equivalents all of the above
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1/9/11 Which of the following is not an effector of fructose-1, 6- bisphosphatase Citrate Fructose-2,6-bisphosphate ATP AMP ADP
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1/9/11 Which of the following is not an effector of fructose-1, 6- bisphosphatase Citrate Fructose-2,6-bisphosphate ATP AMP ADP
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1/9/11 Pentose Phosphate Pathway (7) Is the reaction Glucose + ATP Glucose-6- Phosphate the committing step for glycolysis? a. Yes, because it has a large negative G Δ b. No, because Glucose-6-Phosphate can enter into other cycles such as the pentose phosphate pathway. c. Yes, because the enzyme hexokinase is a highly regulated enzyme. d. No, there is no committed step for glycolysis.
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1/9/11 The committing step will be the step that will commit glucose to being metabolized.
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