ENERGY AND ATP

Cards (9)

  • Structure of ATP
    Contains adenine, ribose, phosphates- adenine and ribose combine to form adenosine, plus 3 phosphates.
  • Hydrolysis of ATP equation
    ATP + H2O ----> ADP + Pi + E
  • How does ATP store energy?
    -Bonds between phosphate groups are unstable so have a low activation energy
    -meaning they are easily broken
    -when they are broken they release a considerable amount of energy
  • What enzyme catalyses the hydrolysis of ATP
    ATP hydrolase (ATPase)
  • Synthesis of ATP
    -Conversion of ADP to ATP
    -reversible
    -addition of inorganic phosphate to ADP
  • What enzyme catalyses the synthesis of ATP?
    ATP synthase
  • What type of reaction is the synthesis of ATP?
    Condensation
  • What ways do the synthesis of ATP occur?
    3 ways:
    • chlorophyll-containing plant cells during photosynthesis
    • plant and animal cells during respiration
    • plant and animal cella when phosphate groups are transferred from donor molecules to ADP
  • What are the roles of ATP?
    Immediate energy source:
    • metabolic processes
    • movement
    • active transport
    • secretion
    • activation of molecules (Pi phosphorylate other molecules)