ATP

ATP

ATP

  • Respiration is the process which energy which is released. Cells do not obtain their energy directly from glucose this comes from ATP.
  • ATP is referred to as the energy currency of the cell.
  • ATP consists of the following structure :
  1. The nucleotide base adenosine
  2. A ribose sugar
  3. Three phosphate groups
  • ATP goes to the part of the cell which requires energy
  • ATP is made from one ADP and one phosphate group- with the enzyme ATP hydrolase.
  • This undergoes a hydrolysis reaction where a phosphate bond is broken where energy is released.
  • Most ATP is generated from electrical potential energy- this energy is from the transfer of electrons utilised by electron carriers in the mitochondria and the chloroplasts.
  • The enzyme which synthesises ATP is called ATP synthase.
  • Energy needed for ATP is required by active transport- an example of this is the sodium potassium pump which has binding sites for Na, ATP and potassium.
  • In this the protein is an ATPase- involving hydrolysis of ATP to ADP to the phosphate which requires energy to be released which moves the pump.

 

 

 

 

 

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