ATP

Question 1

atp

Answer 1

adenosine triphosphate

Question 2

What are the components of ATP?

Answer 2

Ribose sugar, adenine and three phosphate groups joined together

Question 3

atp reaction

Answer 3

atp + water ⇌ adp + Pi

Question 4

ADP

Answer 4

adenosine diphosphate

Question 5

how much energy is released in atp reaction

Answer 5

30.6kjmol-1

Question 6

exergonic reaction and example

Answer 6

ATPase hydrolyses the 2nd and 3rd bond in atp and releases energy
eg: active transport, muscle contraction, synthesis

Question 7

endergonic reaction

Answer 7

adp and pi combine in condensation which requires energy input
energy is stored in the bond between the second and third phosphate.

Question 8

phosphorylation

Answer 8

addition of phosphate to adp, making it more reactive and lowering activation energy

Question 9

atp as an energy carrier

Answer 9

makes energy readily available
we make and break about 50kg a day but body contains 5g

Question 10

why is atp known as universal energy currency in living organisms

Answer 10

It is used in all organisms for all metabolic reaction
Released in small useable amounts
Standard unit of energy

Question 11

advantages of atp

Answer 11

-immediate energy release
-small useable amounts
-one enzyme needed
-common source=cell efficiency and control

Question 12

atp roles

Answer 12

metabolic processes-build large molecules like dna and protein synthesis
active transport-change carrier protein shapes so substrates can move against gradient
movement-muscle contraction
nerve transmission-sodium potassium pump across axon membrane
secretion-packaging and transport of products into vesicles