There Is Reciprocal Regulation of Glycolytic and Gluconeogenic Reactions Interconverting

question 22

Multiple Choice

There is reciprocal regulation of glycolytic and gluconeogenic reactions interconverting fructose-6-phosphate and fructose-1,6-bisphosphate.Which one of the following statements about this regulation is not correct?

• A)Fructose-2,6-bisphosphate activates phosphofructokinase-1.
• B)Fructose-2,6-bisphosphate inhibits fructose-1,6-bisphosphatase.
• C)The fructose-1,6-bisphosphatase reaction is exergonic.
• D)The phosphofructokinase-1 reaction is endergonic.
• E)This regulation allows control of the direction of net metabolite flow through the pathway.

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