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butalik [34]
2 years ago
7

g Fructose 2,6-bisphosphate is a _______________ regulator of glycolysis and a _________________regulator of gluconeogenesis.

Biology
1 answer:
forsale [732]2 years ago
5 0

Answer:

Fructose 2,6-bisphosphate is a <em>positive</em> regulator of glycolysis and a <em>negative</em> regulator of gluconeogenesis.

Explanation:

Fructose-2,6-bisphophate is an allosteric effector of the enzymes phosphofructokinase-1, PFK-1 and fructose-1,6-bisphosphatase, FBPase-1.

When fructose-2,6-bisphosphate binds to its allosteric site on PFK-1, it increases the enzymes affinity for its substrate fructose-6- phosphate and reduces its affinity for ATP and citrate, its allosteric inhibitors. This favors favors glycolysis.

However, binding of fructose-2,6-bisphosphate on its allosteric site on FBpase-1 has the opposite effect on it. It reduces its affinity for its substrate, fructose-1,6-bisphosphate, thereby inibiting gluconeogenesis.

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6 0
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A scientist observes that, when the pH of the environment surrounding an enzyme is changed, the rate the enzyme catalyzes a reac
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Answer:

A- A pH change can cause the enzyme to change its shape

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