Carbohydrate
Which of the following is carried out when cAMP functions as a second messenger?

Acts second in importance to AMP
Activates all cytosolic protein kinases
Acts outside the cell to influence cellular processes
Activates the cAMP-dependent protein kinase

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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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