Lecture 8

Question 1

1st law of thermodynamics –

Answer 1

Energy cannot be created or destroyed

Question 2

2nd law of thermodynamics –

Answer 2

All energy transformations are inefficient because every reaction loses some energy to the surroundings as heat

Question 3

Anabolism –

Answer 3

reactions that build things

Question 4

Catabolism –

Answer 4

reactions that degrade things

Question 5

If delta G is negative the reaction is

Answer 5

Exergonic

Question 6

If delta G is positive the reaction is

Answer 6

Endergonic

Question 7

Delta G=

Answer 7

∆H-T∆S

Question 8

The difference between AMP, ADP, and ATP is

Answer 8

how many phosphate groups they have

Question 9

Enzymes essentially

Answer 9

lower activation energy

Question 10

Where do irreversibly inhibitors bind?

Answer 10

bonds covalently to side chains of the enzyme, permanently disables the enzyme

Question 11

Reversible inhibitors bond:

Answer 11

non covalently to enzyme

Question 12

Non-competitive inhibitors

Answer 12

Bind to the enzyme away from the active site and alter the shape of the active site, often function as metabolic regulators

Question 13

Competitive inhibitors

Answer 13

Compete with the natural substrate for binding sites (concentration dependent)