Bioenergetics

Question 1

the study of energy changes accompanying biochemical reactions and predicts if a reaction is possible

Answer 1

bioenergetics

Question 2

What does ∆G represent?

Answer 2

Change in Free energy ; energy available for doing work

Question 3

What does ∆H represent?

Answer 3

change in enthalpy; heat released or absorbed

Question 4

What does ∆S represent?

Answer 4

change in entropy; measures randomness or disorder

Question 5

What is the equation for change in energy?

Answer 5

∆G = ∆H-T∆S

Question 6

What is ∆G in this situation?

- there is net loss of energy and the reaction proceeds spontaneously; i.e., it is exergonic reaction.

Answer 6

∆G is negative

Question 7

What is ∆G in this situation?

-there is net gain of energy and reaction proceeds only if energy is added into system; i.e., it is endergonic reaction.

Answer 7

∆G is positive

Question 8

ΔG˚of hydrolysis of terminal phosphate in ATP yields ____?

Answer 8

-7.3 kcal/mol

Question 9

ΔG˚of hydrolysis of creatine phosphate yields ____?

Answer 9

-10.3

Question 10

ΔG˚of hydrolysis of 1,3-BPG yields ____?

Answer 10

-11.8

Question 11

ΔG˚of hydrolysis of Carbanoyl phosphate yields ____?

Answer 11

-12.3

Question 12

ΔG˚of hydrolysis of phosphoenolpyruvate yields ____?

Answer 12

-14.8

Question 13

What is ΔG if the free energy of substrate is more than the product?

Answer 13

negative

Question 14

What is ΔG if the free energy of product is more than the substrate?

Answer 14

positive