ATP

Question 1

Two ways in which the hydrolysis of ATP is used in cells.

Answer 1

Provides energy for metabolic reactions.

Phosphorylation of other substances to make them more reactive.

Provides energy for active transport.

Question 2

What is one molecule of ATP made up of?

Answer 2

1 nucleotide base of Adenine
1 Ribose sugar
3 Phosphate groups

Question 3

Where is energy stored in ATP molecules?

Answer 3

In high energy bonds between the Phosphate groups.

Question 4

How is energy released from ATP molecules?

Answer 4

ATP is hydrolysed to ADP and P.

A phosphate bond is broken which releases energy.

ATP hydrolase catalyses this reaction.

Question 5

How is ATP resynthesised?

Answer 5

A condensation reaction between an ADP molecule and a Phosphate ion.

The reaction is catalysed by ATP synthase.