ATP

Question 1

Cells constantly hydrolyse ATP to provide energy.

(a) Describe how ATP is resynthesised in cells.

Answer 1

From ADP and phosphate;

Accept

Reject P/Phosphorus

Reject use of water in the reaction

2. By ATP synthase;
3. During respiration/photosynthesis;

Question 2

Give two ways in which the hydrolysis of ATP is used in cells.

Answer 2

To provide energy for other reactions/named process;

Reject ‘produce’ energy

2. To add phosphate to other substances and make them more reactive/change their shape;