Biological Molecules - ATP

Question 1

What is ATP?

Answer 1

adenosine triphosphate is a nucleotide derivative and is formed from a molecule of ribose, a molecule of adenine and three phosphate groups.

Question 2

What happens in the hydrolysis of ATP?

Answer 2

Converts to adenosine diphosphate (ADP) and an inorganic phosphate group (Pi)
Catalysed by the enzyme ATP hydrolase

Question 3

What can the inorganic phosphate released during the hydrolysis of ATP be used for?

Answer 3

To phosphorylate other compounds, often making them more reactive

Question 4

What happens in the synthesis of ATP?

Answer 4

ADP is combined with an inorganic phosphate (Pi) group by the enzyme ATP synthase
This is an energy-requiring reaction
Condensation reaction
Water is a waste product

Question 5

When is ATP made?

Answer 5

During the reactions of respiration and photosynthesis

Question 6

In what two ways can ATP be made?

Answer 6

Substrate-linked phosphorylation (occurs in the glycolysis stage of respiration)
Chemiosmosis (occurs in the electron transport chain stage of respiration)