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8 Cards in this Set
- Front
- Back
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Explain the breakdown of glycogen
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A phosphorus ion attacks the glycogen at the non reducing end. this phosphorlysis occurs at the a 1,4 bonds. To produce G1P. An isomerase rxn occurs, producing G6P for glycolysis
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Why would you classify conversion of glycogen to glucose-6-phosphate as catabolic?
I would not classify this process as catabolic, it is anabolic! It produces ATP. It oxidizes carbon. It converts a complex molecule to a simple molecule. B, C, and D. |
converts complex molecule to a simple molecule
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What needs to happen to glucose for glycogen to be synthesized?
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It must be activated
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How does the glucose activation for glycogen synthesis work?
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G6P is converted to G1P by phosphoglyceromutase. two P are cleaved from UTP to form UMP. THis ends up being an extremely exergonic reaction that drives the binding of G1P and UMP. G1P is added to glycogen chain
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When glucose is added to glycogen entropy ____?
Increases Decreases I need help with this! |
it decreases
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2Pyruvate + 4ATP + 2GTP + 2NADH + 2H+ + 4H2O Glucose + 4ADP + 2GTP + 6Pi + 2NAD+
Based on general metabolic principles, which statements are true? i) Producing glucose from pyruvate is endergonic. ii) Carbon is oxidized in this reaction. iii) This is a catabolic pathway. A. i and ii B. ii and iii C. i and iii D. only i E. only ii 2Pyruvate + 4ATP + 2GTP + 2NADH + 2H+ + 4H2O Glucose + 4ADP + 2GTP + 6Pi + 2NAD+ Based on general metabolic principles, which statements are true? i) Producing glucose from pyruvate is endergonic. ii) Carbon is oxidized in this reaction. iii) This is a catabolic pathway. A. i and ii B. ii and iii C. i and iii D. only i E. only ii |
D
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Which of these reactions would be easily reversible by changes in the cellular concentrations of the substrates and products?
i) PEP + ADP Pyruvate + ATP G = -5.5 kcal/mol ii) 1,3-BPG + ADP 3-PG + ATP G = +0.023 kcal/mol iii) Glucose + ATP G-6-P + ADP G = -8.1 kcal/mol iv) F-1,6-BP DHAP + G-3-P G = -0.057 kcal/mol A. ii B. i and ii C. ii and iv D. iv E. i, ii, and iii |
C
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Gluconeogenesis oxidizes/reduces carbons?
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reduces
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