Carbohydrate
Which of the following statements about the energy needs of cells is false?

Without a continuous input of energy, cell disorder will increase
Many cellular reactions have an associated activation energy
The laws of thermodynamics force cells to acquire energy
The most usable energy for cells comes from the rapid combustion of glucose

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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

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

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Carbohydrate
Which of the following does not occur during gluconeogenesis?

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

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