3.1.6 ATP

Question 1

What is adenosine triphosphate made up of?

Answer 1

Ribose (pentose sugar)
Adenine (nitrogenous base)
3 phosphate groups

Question 2

What is ATP?

Answer 2

An immediate source of energy in a cell

Question 3

What is the hydrolysis of ATP?

Answer 3

ATP + water → ADP + Pi + energy

Question 4

What is the use of ATP hydrolysis?

Answer 4

Could be coupled to energy-requiring reactions within cells

Inorganic phosphate released could be used to phosphorylate other compounds - making them more reactive

Question 5

How is ADP and Pi resynthesised back to ATP?

Answer 5

Using enzyme - ATP synthase in a condensation reaction

Question 6

What enzyme is used in ATP hydrolysis?

Answer 6

ATP hydrolase

Question 7

What energy-requiring processes in cells are ATP used in?

Answer 7

Metabolic processes
Movement
Active transport
Secretion
Activation of molecules

Question 8

What is the inorganic phosphate (released in ATP hydrolysis) used in?

Answer 8

To phosphorylate other reactions, making them more reactive