ATP

Question 1

ATP

Answer 1

1. Adenosine triphosphate
2. Cells release energy from glucose during respiration
3. This energy released cannot be directly used by cells
4. Therefore, cells use this energy to create ATP, an energy storage molecule
5. Once ATP is created, it is transported to the part of the cell which needs energy
6. The energy within ATP is stored within the phosphate bonds between phosphate groups. This energy is released when ATP is hydrolysed

Question 2

How is ATP used?

Answer 2

1. After ATP is made, it is transported to the part of the cell which needs energy
2. Here, it is hydrolysed into ADP and Pi. The phosphate bonds between the phosphate groups are broken and energy is released. This hydrolysis reaction is catalysed by ATP hydrolase
3. The inorganic phosphate (Pi) can be used to phosphorylate another compound, making it more reactive
4. ATP can be resynthesised by a condensation reaction between ADP and Pi. This reaction is catalysed by ATP synthase