Carbohydrate
Fructose is metabolized by

both (a) and (b)
fructose 1-phosphate pathway
fructose 6-phosphate pathway
glyceraldehyde 3-phosphate pathway

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Carbohydrate
When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

their enzymes lose the proper three-dimensional shape
there is insufficient molecular motion for substrates to interact
the activation energy for the reaction is raised
enzyme active sites become permanently bound to substrates

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Carbohydrate
Glucagon and epinephrine

stimulates gluconeogenesis and inhibits glycolysis
stimulates gluconeogenesis and glycolysis
inhibits gluconeogenesis and stimulates glycolysis
inhibits gluconeogenesis and glycolysis

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Carbohydrate
Which of the following does not occur during gluconeogenesis?

The decarboxylation of oxaloacetate to phosphoenolpyruvate
The conversion of pyruvate to phosphoenolpyruvate (PEP)
The conversion of PEP to fructose bisphosphate
The carboxylation of pyruvate to oxaloacetate

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