Glycolysis
Glucose from the breakdown of glycogen is obtained in

the muscles by hydrolysis
the liver by phosphorolysis
both (a) and (b)
the muscles by phosphorolysis

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Glycolysis
Why does the glycolytic pathway continue in the direction of glucose catabolism?

The enzymes of glycolysis only function in one direction
Glycolysis occurs in either direction
High levels of ATP keep the pathway going in a forward direction
There are essentially three irreversible reactions that act as the driving force for the pathway

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Glycolysis
A kinase is an enzyme that

uses ATP to add a phosphate group to the substrate
removes phosphate groups of substrates
removes water from a double bond
uses NADH to change the oxidation state of the substrate

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Glycolysis
Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?

Genetic control of the enzyme concentration
Allosteric control of the enzyme activity
Diffusional coupling between adjacent active sites
Covalent modification of the enzyme

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