Chap 3 (Energy changes in reaction)

Question 1

Which direction do exergonic reactions always go in?

Answer 1

Forward

Question 2

System tend to go from states of_______potential engery to states of________ potential energy

Answer 2

Higher, lower.

Question 3

What is a coupling reaction?

Answer 3

When a catabolic reaciton occurs and energy is released and it is used to drive a anabolic reaction

Question 4

What is equilibrium?

Answer 4

When there is no net reaction, forward reaction= reverse reaction. Also when they have the same energy.

Question 5

What can be said about the law of Mass Action?

Answer 5

An increase in the concentration of reactants tends to push a reaction forward
An increase in the concentration of products tends to push a reaction in reverse

Question 6

Give an example of Law of Mass Action in relation to physiology.

Answer 6

When you ingest a meal, blood glucose levels increase, as glucose is absorbed into the blood. In response, insulin is released signalling increase in glucose uptake into cells.