ATP

Question 1

How do you draw and label a molecule of ATP?

Answer 1

Diagram should include three phosphate groups (circles) joined to ribose (pentagon) and adenine (rectangle)

Question 2

What are the components of a nucleotide?

Answer 2

Pentose sugar, phosphate plus organic base which contains nitrogen.

Question 3

What are the components of ATP?

Answer 3

Ribose sugar, adenine and three phosphate groups joined together

Question 4

Why is ATP formation endergonic?

Answer 4

Because energy is stored in the bond between the second and third phosphate.

Question 5

Why is ATP hydrolysis exergonic?

Answer 5

Energy is released when the bond is broken between the second and third phosphate

Question 6

Why is ATP known as the universal energy currency?

Answer 6

It is used by all living organisms to provide energy for nearly all reactions

Question 7

Name three cellular processes that require ATP

Answer 7

Active transport, muscle contraction, protein synthesis, cell division, bulk transport.

Question 8

How much energy is released when one mole of ATP is hydrolysed?

Answer 8

30.6kJ