ATP
- Created by: rhiglynn
- Created on: 01-03-16 11:36
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- ATP
- ATP is the immediate source of energy in a cell
- Plant and animal cells release energy from glucose in respiration
- A cell cant get its energy directly from glucose
- So, during respiration, the energy released is used to make ATP
- ATP is made up of adenine, ribose sugar and 3 phosphate groups.
- ATP then diffuses to the part of the cell that needs the energy
- The energy in ATP is stored in high energy bonds between the phosphate groups. It is released via hydrolysis reactions.
- ATP is made and used quickly
- When energy is needed by a cell, ATP is broken down into ADP and an inorganic phosphate.
- This is a hydrolysis reaction.
- As phosphate bond is broken, energy is released.
- Catalysed by the reaction ATP hydrolase
- This can be coupled to other energy- requiring reactions- so energy released can directly be used to make the coupled reaction happen, rather than being lost as heat.
- Catalysed by the reaction ATP hydrolase
- As phosphate bond is broken, energy is released.
- This is a hydrolysis reaction.
- The inorganic phosphate can be added to another compound
- Phosphorylation, often makes the compound more reactive.
- ATP can be re-synthesised in a condensation reaction with ADP and an inorganic phosphate.
- This happens during photosynthesis and respiration and is catalysed by the enzyme ATP synthase.
- ATP can be re-synthesised in a condensation reaction with ADP and an inorganic phosphate.
- This happens during photosynthesis and respiration and is catalysed by the enzyme ATP synthase.
- When energy is needed by a cell, ATP is broken down into ADP and an inorganic phosphate.
- ATP is the immediate source of energy in a cell
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