ATP

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ATP

• The Cells Energy Storing Molecule

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Energy is stored in the chemical bonds of food

• Food molecules cannot deliver energy directly to
  cells.
• The energy stored in chemical bonds must first be
  transferred to a molecule capable of providing
  energy when it is needed.

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ATP is the energy-storing molecule.

• ATP stands for Adenosine Triphosphate
• ATPs function is to trap the energy released by
  burning food and STORE it. It can then RELEASE
  it in controlled amounts, as the cell needs it.

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Structure of ATP

• 1 nitrogen base adenine
• 1 five-carbon sugar ribose
• 3 phosphate groups triphosphate

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HOW IS ATP MADE?

• A phosphate group is added to ADP (adenosine
  Diphosphate).
• ADP is just like ATP except it only has 2
  phosphate groups (thats why its called di)
• THIS PROCESS STORES ENERGY

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HOW IS ATP MADE? continued

• The triphosphate tail of ATP is unstable and the
  bonds between the phosphate groups can be broken
  easily by adding water.
• WHEN ATP IS BROKEN DOWN INTO ADP ENERGY IS
  RELEASED!

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ATP-ADP CYCLE