Question

A cell requires 3,538 J of energy. How many ATP molecules would be hydrolyzed?

Answer 1

Answer:

1169.58 molecules

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Answer 2

Answer:

Hydrolysis of 6.99 x10²² molecules has to take place to provide the cell with the energy of 3538J

Explanation:

• One mole of ATP when hydrolysed produces 30.5 kilo-joule /mole or 30500 J/mol
• The cell needs 3538J of energy
• So the amount of ATP in mole required by the cell is 3538/30500 = 0.116 moles
• 1 mole of ATP contains 6.022 x 10²³ molecules of ATP
• We need only 0.116 mols of ATP
• The number of molecules of ATP we need is 0.116 x 6.022 x 10²³ = 6.99 x10²² molecules

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