What Controls the Activity of the Opposing Enzymes Hexokinase and Glucose-6-Phosphatase

question 4

Multiple Choice

What controls the activity of the opposing enzymes hexokinase and glucose-6-phosphatase from the glycolysis and gluconeogenesis pathways?

• A) levels of ATP
• B) cellular compartmentalization and separation of the two enzymes
• C) fructose-2,6-bisphosphate concentration
• D) phosphorylation of the enzymes

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Definitions:

Variable Inspection Cost

The cost associated with the examination of products or processes that varies with the level of production or activity.

Machine-Hours

A measure of machine use or production time calculated in hours.

Relevant Range

This is the range of activity within which assumptions about variable and fixed cost behavior are valid.

Differential Cost

The cost difference between two alternative decisions.