ATP Inorganic Ions and Water Unit 1.5

Question 1

What is the structure of ATP

Answer 1

Made of :
-Adenine(same base as found in DNA)
(Attached to)
-ribose sugar
(attached to)
-3 phosphate sugars

Question 2

What are some uses for ATP?

Answer 2

• Active transport
• Synthesising molecules
• DNA replication
• making proteins from amino acids
• Mitosis in contraction of spindle fibres
• Muscle contraction

Question 3

what is the full name for ATP

Answer 3

Adenine triphosphate

Question 4

What reaction is used to release as store energy in ATP

Answer 4

Hydrolysis- ATP is hydrolysed releasing energy for processes in the cell
Respiration- releases energy to synthesise ADP+Pi into ATP storing energy in phosphate bonds

Question 5

Where is energy stored in ATP

Answer 5

-Energy is stored in the phosphate bonds which are high energy bonds

Question 6

How is ADP + Pi converted into ATP

Answer 6

-Energy released from respiration
-Used in a condensation reaction of ADP+Pi
-Enzyme ATP synthase catalyses reaction
-Water molecule released forming ATP+H2O
-Energy is stored in phosphate bonds
(ATP is then hydrolysed in constant cycle)

Question 7

How is ATP converted into ATP+PI

Answer 7

-ATP is hydrolysed (a water molecule is added
-ATP hydrolase catalyses reaction
-Breaks high energy bond between phosphates releasing energy for processes in cell
-Forms ADP+Pi
(ADP+Pi is then sythesised in a constant cycle)

Question 8

What is phosphorylation?

Answer 8

-Pi (inorganic phosphate) can be used in other reactions to make molecules more reactive

Question 9

Why is ATP useful?

Answer 9

• Energy is released in small usable amounts
• Involves a single step reaction to release energy
• Is a intermediate energy substance
• It is used immediately and can be reformed
• Can be reformed
• Adds of phosphate molecule to make it more reactive

Question 10

What is an inorganic ion?

Answer 10

An atom or compound with a positive or negative charge