ATP

Question 1

Give three uses of energy from ATP in a liver cell.

Answer 1

Active transport; Phagocytosis; Synthesis of glycogen; Protein / enzyme; DNA / RNA; Lipid / cholesterol;
Urea in glycolysis; Bile production; Cell division;

Question 2

ATP is useful in many biological processes. Explain why.(5)

Answer 2

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

Question 3

ATP is sometimes described as an immediate source of energy. Explain why.

Answer 3

(Energy release) only involves a single reaction/one-step/
(energy released) in ATP 🡪 ADP (+Pi)/
energy transfer direct to reaction requiring energy;

Question 4

Explain why humans make more than their body mass of ATP each day

Answer 4

1. ATP is unstable;
2. ATP cannot be stored / is an immediate source of energy;
3. Named process uses ATP ;
4. ATP only releases a small amount of energy at a time;