ATP

Question 1

What does ATP stand for?

Answer 1

Adenosine triphosphate.

Question 2

What is ATP formed from?

Answer 2

• Pentose sugar: ribose
• Nitrogenous organic base: adenine
• 3 phosphate groups

Question 3

ATP hydrolysis releases energy in small manageable amounts so…

Answer 3

…little energy is wasted when used in the cell.

Question 4

ATP can be rapidly re-synthesised after hydrolysis so

Answer 4

…a continual supply is available in the cell.

Question 5

ATP can transfer energy to other molecules by adding one of its phosphate groups so …

Answer 5

…it can make molecules more reactive.

Question 6

ATP cannot cross the cell surface membrane so …

Answer 6

…it ensures that it is always available inside the cell from chemical processes.

Question 7

ATP is small and soluble so …

Answer 7

…it can easily diffuse through the cytoplasm and provide energy for different chemical reactions.

Question 8

Only one bond is broken to release energy during ATP hydrolysis to ADP so …

Answer 8

…it releases energy immediately.

Question 9

What are some examples of processes that require ATP?

Answer 9

• Active transport
• Muscle contraction
• Phosphorylation
• Anabolism
• Secretion of substances from cells