Lecture 13 - Enzyme Regulation & Bioenergetics Flashcards Preview

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Flashcards in Lecture 13 - Enzyme Regulation & Bioenergetics Deck (10):
0

True or false? An unfavorable reaction cannot be driven forward by a favorable reaction

False, it CAN

1

What are the two main types of regulation?

Allosteric regulation
Reversible covalent modification

2

Reversibly bind to regulatory molecules that alter the enzyme activity

Allosteric regulation

3

A group is added to the enzyme to modulate its activity, and this group can be removed to reverse the effects.

Reversible covalent modification

4

The binding of a _________ regulator increases activity in the absence of a __________ regulator increases activity.

Positive
Negative

5

The study of energy transductions in living systems

Bioenergetics

6

What's the first law of thermodynamics?

Energy may change form, and maybe transported, but energy cannot be created or destroyed.

7

What's the second law of thermodynamics?

The entropy of the universe will always increase

8

A measure of how far a reaction must go to reach equilibrium, when initial concentrations of each component are 1M, with standard state conditions

Standard free energy change, ΔG'°

9

What does the actual free energy change for a reaction depend on?

On the initial concentrations of substrates and products, and on the temperature.