1.8 ATP

• ATP vs ADP

  • ATP has 3 phosphate groups and ADP has 2 phosphate groups
  • ATP has higher energy
• Phosphorylated nucleotides


  A nucleotide which one or more phosphate groups have been added.
• When does ATP release energy?

  When the bond between the 2nd and 3rd phosphate bond is broken
• Why is it better to store energy as ATP than glucose?

  • Glucose is a large molecule=wasted energy
  • Takes more time to break down glucose
• What does ATP provide energy for?


  • Metabolic processes
  • Movement
  • Active transport
  • Secretion