Carbohydrate
Boat and chair conformations are found

in any sugar without equatorial -OH groups
in pyranose sugars
in any sugar without axial -OH groups
only in D-glucopyranose

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Carbohydrate
Glucagon and epinephrine

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

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

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

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