Enzymes

Question 1

What do muscles do?

Answer 1

Convert chemical energy from food into mechanical energy of muscle contractions

Question 2

What are exergonic reactions?

Answer 2

Release free energy and have a negative G, spontaneous

Question 3

What are endergonic reactions?

Answer 3

Take up free energy, positive G, non-spontaneous

Question 4

What do enzymes do?

Answer 4

Lower activation energy, offer easier path, DO NOT ALTER G

Question 5

Things affecting substrate-enzyme bond

Answer 5

Orientation, Physical Strain, Electrical Charge

Question 6

How do inorganic cofactors work?

Answer 6

They are permanently bound.

Question 7

Properties of Co-enzymes?

Answer 7

1. Non-protein carbon containing molecules,
2. Move from enzyme adding or removing chemical groups
3. Not permanently bound
4. Changed by the reaction and released from the enzyme

Question 8

Competitive inhibitor?

Answer 8

Binds to active site, preventing substrate from binding

Question 9

Uncompetitive inhibitor?

Answer 9

Binds to enzyme substrate complex, preventing the release of products.

Question 10

Non-competitive inhibitor?

Answer 10

Binds at a site other than active site, changing the enzyme structure, so substrate is unable to fit at the active site