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
The multistep pathways of metabolism are efficient because they

spread the enzymes for a pathway into several different organelles
use the same enzyme for all of the substrates in the pathway
locate all of the enzymes for a pathway in the same place within the cell
use the same substrate for all of the enzymes in the pathway

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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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