Energy And Enzymes

Question 0

What happens when reactions are at equilibrium?

Answer 0

No work can be done. Organisms keep reactions from equilibrium as open systems so that reactants are constantly appearing and disappearing

Question 1

How does energy enter and leave the biosphere

Answer 1

Enters as a photon and leaves as heat

Question 2

What do catalysts do?

Answer 2

Lower the activation I’m a reaction

Question 3

Describe an enzyme

Answer 3

They are very specific proteins that provide an active site for the substrate to react in.

Question 4

What are the two types of inhibition and what do they do?

Answer 4

Competitive- inhibitor binds to the active site preventing anything else from binding.
Non-competitive- inhibitor binds to allosteric site changing the active site and making substrate binding impossible

Question 5

What is an enzyme activator?

Answer 5

Activators improve the function of an enzyme by binding to the allosteric site and causing a shape change that improves the ability of the enzyme

Question 6

What is different about proline

Answer 6

R group makes covalent bond to itself creating a rigid 90 degree angle
(Inflexible)

Question 7

What is different about glycine?

Answer 7

R group is h which allows rotation and flexibility

Question 8

What is different about cystine?

Answer 8

R group can make a covalent bond with another r group of another amino acid via S-H (disulfide bond)

Question 9

Hoe do you tell if an amino acid is hydrophilic?

Answer 9

If there is something other than a c or h in its r grou