structure of ATP

Question 1

what does ATP stand for?

Answer 1

adenosine triphosphate

Question 2

what does ATP hydrolyse into?

Answer 2

ADP and an inorganic phosphate (Pi)

Question 3

which enzyme catalyses the reaction of ATP to ADP and Pi?

Answer 3

ATP hydrolase

Question 4

what are the uses of this reaction? (ATP to ADP and Pi)

Answer 4

• can be coupled with energy required reactions within cells (e.g active transport)
• Pi can phosphorylate other compounds, making them more reactive

Question 5

what type of reaction is ATP to ADP?

Answer 5

reversible reaction

Question 6

why is ATP used for releasing energy?

Answer 6

• it releases energy in small amounts
• its broken down in a one-step reaction so energy is available quickly
• it adds phosphates to make substances more reactive
• its reformed easily so it can be used again

Question 7

how is ATP resynthesised?

Answer 7

• ADP and Pi undergo a condensation reaction to resynthesise ATP using the enzyme ATP synthase