Energy, enzymes & metabolism

Question 1

What are the two different types of metabolism?

Answer 1

Catabolism (nedbrytning, energy output) & anabolism (uppbyggnad, energy input)

Question 2

What are the two different Active electron Carriers in anabolic & catabolic reactions?

Answer 2

NAD (catabolic) & NADH (anabolic)

Question 3

What does the enzyme do in a reaction?

Answer 3

Works as an catalyst, lowers the activation energy

Question 4

How does enzymes work (three things)?

Answer 4

1. Enzymes can orient the substrate
2. Enzymes can induce strain in the substrate
3. Can temporarily add chemical groups to substrate

Question 5

What are the different regulatory partners of enzymes (3st) ?

Answer 5

1. Prostethic groups
2. Inorganic factors
3. Coenzymes (binds to active sites)

Question 6

How are enzymes regulated (4 st)?

Answer 6

1. Irreversible inhibition
2. Reversible inhibition
3. Allosteric regulation
4. Fosfolering

Question 7

Describe the enzyme regulation reversible inhibition

Answer 7

Competitive inhibition - takes the substrates place
Uncompetitive inhibition - sätter sig som ett lock
Noncompetitive inhibition - binds to enzym –> changes the enzyme form –> substrate can’t bind

Question 8

Describe the enzyme regulation Allosteric inhibition

Answer 8

Inhibition - keeps the enzyme inactive
Activator - keeps the enzyme active