Enzymes

  • Created by: abiclark
  • Created on: 06-04-17 12:01
What is the Q10?
Shows how much the rate of reaction changes when the temperature is raised by 10^c. Most enzyme controlled reactions have a q10 of 2.
1 of 10
What are cofactors?
Cofactors are substances that allow enzymes to work. They are non protein substances that bind to the enzymes helping the the enzyme and substrate to bind together. They are not used up or changed in any way. Example= Cl- are cofactors for amylase.
2 of 10
What are coenzymes?
They are organic molecules that particpate in a reaction and are changed by it. They are carriers that move chemical groups between enzymes. Vitamins are often soucrses of coenzymes.
3 of 10
What do zinc ions do?
Zinc ions are a prosthetic group for carbonic anhydrase, they are a permanant part of the enzymes active sit.
4 of 10
When can the enzyme inhibitors be reversible?
They are reversible when the bonds between the inhibitor and the enzyme are weak so the inhibitor can be removes.
5 of 10
What is meant by product inhibition?
When enzymes are inhibited by the product of the reaction tthey catalyse.
6 of 10
What is the name given to the amount of energy needed to start a reaction?
activation energy
7 of 10
What protein structure is the shape of the active site dertermined by?
Tertiary structure
8 of 10
What is a enzymes substrate complex?
When a substrate binds to an active site.
9 of 10
Why does increasing the concentraion of an enzymes not always increase the rate of reaction?
Because you may keep adding more enzymes but if there is not enough substrate to bind to the active site hen a reaction wont take place. If the amount of substrate is limeted then adding more enzyme will have no further affect.
10 of 10

Other cards in this set

Card 2

Front

What are cofactors?

Back

Cofactors are substances that allow enzymes to work. They are non protein substances that bind to the enzymes helping the the enzyme and substrate to bind together. They are not used up or changed in any way. Example= Cl- are cofactors for amylase.

Card 3

Front

What are coenzymes?

Back

Preview of the front of card 3

Card 4

Front

What do zinc ions do?

Back

Preview of the front of card 4

Card 5

Front

When can the enzyme inhibitors be reversible?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Enzymes resources »