ATP

Question 1

role of ATP in the cell
(what do phosphate groups do)

Answer 1

Energy released is coupled to metabolic reactions
Phosphate group phosphorylates compounds to make them more reactive

Question 2

what is ATP made from

Answer 2

-Adenine (nucleotide)
-Ribose
-3 Phosphate groups

Question 3

What happens when energy is needed by a cell

Answer 3

ATP is broken down into ADP +Pi, done by a hydrolysis reaction, phosphate bond is broken, catalysed by the enzyme ATP hydrolase

Question 4

what’s it called when a phosphate group attaches to a molecule

Answer 4

phosphorylation

Question 5

How is ATP resynthesisied

Answer 5

ATP synthase catalyses condensation reaction between the ADP + Pi
During photosynthesis or respiration

Question 6

Explain why ATP is suitable as the “energy currency” of cells

Answer 6

-small amounts of energy released at a time so less energy wasted as heat
-single step hydrolysis = energy available quickly
-rapid resynthesis