ATP

Question 1

ATP is useful in many biological processes. Explain why. [4]

Answer 1

1. Releases energy in small / manageable amounts;
2. (Broken down) in a one step / single bond broken immediate energy compound / makes energy available rapidly;
3. Phosphorylates / adds phosphate makes (phosphorylated substances) more reactive / lowers activation energy;
4. Reformed / made again;

Question 2

Describe how ATP is resynthesised in cells [3]

Answer 2

From ADP and phosphate;

By ATP synthase;

During respiration/photosynthesis;

Question 3

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

Answer 3

To provide energy for other reactions/named process;

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