1.Glucose 6-phosphatase (G6Pase) catalyzes the dephosphorylation of glucose 6-phosphate (G6P). It bypasses the irreversible glycolytic reaction of...

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Biology

1.Glucose 6-phosphatase (G6Pase) catalyzes the dephosphorylationof glucose 6-phosphate (G6P). It bypasses the irreversibleglycolytic reaction of glucokinase. Select the best answer thatexplains why G6Pase does not catalyze the reverse reaction ofglucokinase.
A. G6Pase catalyzes an endergonic reaction
B. G6Pase hydrolyzes G6P
C. G6Pase requires energy from ATP to dephosphorylate G6P
D. G6Pase requires only one substrate
5. Insulin and glucagon oppositely control glucose metabolism inthe liver. The former is elevated in response to a carbohydratemeal (fed state) and the latter in response to fasting. Show theoverall effect of each on the pathways of glucose metabolism.
OPTIONS FOR TABLE: increase or decrease
Fed state Fasted state
glucose degradation (glycolysis)
glucose synthesis(gluconeogenesis)
glycogen degradation
glycogen synthesis

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3.8 Ratings (472 Votes)

Ans B G6Pase hydrolysis G6P As G6Pase release Glucose on hydrolysis inito blood stream G6P is an intermediate substrate in gluconeogenesis Also is part of Pentose phosphate pathway Ans 5 Insulin and Glucagon are antagonist See Answer

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	Fed state	Fasted state
glucose degradation (glycolysis)
glucose synthesis(gluconeogenesis)
glycogen degradation
glycogen synthesis