ATP

Question 1

What type of molecule is atp?

Answer 1

Phosphorylated macromolecule

Question 2

What three parts does atp contain?

Answer 2

Adenine, ribose acts as backbone abd phosphates chain of 3

Question 3

Where is energy stored?

Answer 3

Bonds between three phosphate groups

Question 4

How is energy released?

Answer 4

Bonds between phosphate groups are unstable so have low activation energy and are easily broken to release a lot of energy

Question 5

What is the equation when ATP releases energy?

Answer 5

ATP +H2O = ADP +Pi + energy

Question 6

What is it called when ATP is converted to ADP and what catalyses the reaction?

Answer 6

Hydrolysis catalysed by ATP hydrolase

Question 7

What is it called when ADP is converted to ATP and what is it catalysed by?

Answer 7

Condensation reaction catalysed by ATP synthase

Question 8

What does the synthesis of ATP from ADP require?

Answer 8

Addition of phosphate molecule

Question 9

When can the synthesis of ATP from ADP occur?

Answer 9

1. In chlorophyll containing plants during photosynthesis
2. In plant and animal cells during respiration
3. In plant and animal cells when phosphate groups are transferred from donor molecules to ADP

Question 10

What type of energy source is ATP?

Answer 10

Immediate so not stored

Question 11

Why is ATP a good immediate energy source? Why better than glucose?

Answer 11

Releases small managebale amounts of energy compared to large amounts released by glucose
The hydrolysis of atp to adp is a single reaction that releases immediate energy whereas breakdown of glucose is many reactions

Question 12

What 5 things is ATP used for?

Answer 12

1. Metabolic processes
2. Movement
3. Active transport
4. Secretion
5. Activation of molecules make more reactive lowering ae