ATP

• ATP a.k.a adenosine triphosphate
• ATP is made up of 3 phosphate groups , one ribose and one adenine
• The ribose and adenine in ATP is called adenosine
• It only requires a small amount of energy to break the covalent bond holding the last Phosphate group
• When the covalent bond holding The last phosphate group breaks , a great deal of energy is released , this is a hydrolysis reaction.
• ATP is not a long term energy store
• ATP is an immediate energy source , transferring energy nervy from the sites of respiration to parts of the cell which require energy.
• The hydrolysis of ATP results to ADP and Pi
• ADP is adenosine diphosphate
• Pi is inorganic phosphate group
• The hydrolysis of ATP is catalysed by the enzyme ATP hydrolyse
• ATP is resynthesised by the condensation of ADP and Pi
• in the hydrolysis of ATP , the reaction is catalysed by the enzyme ATP synthase during photosynthesis , or respiration
• Hydrolysis of ATP:

  
  

  ATP + water -> ADP + Pi + energy
• ATP : adenine, ribose and three phosphate groups
• ATP hydrolase catalyses ATP -> ADP + Pi
• ATP synthase catalyses condensation reaction between ADP & Pi during photosynthesis and respiration