Biology Revision- Enzymes

HideShow resource information
Why was the lock and key hypothesis modified?
It does not take account of the binding and simultaneous change seen in many reactions. Does not take account of the fact that some enzymes can bind to more than one similarly shaped substrates
1 of 6
What are the characteristics of enzymes?
Enzymes are globular proteins. They are soluble in water due to the presence of many hydrophilic side groups on their constituent amino acids
2 of 6
What factors affect enzymes?
Temperature/ pH/ enzyme concentration/ substrate concentration
3 of 6
Explain the effect of the non competitive inhibitor?
The non-competitive inhibitor attaches to the enzyme at a site other than the active site and changes the shape of the active site so an enzyme substrate complex can not be formed
4 of 6
Give an example of an enzyme, its substrate and the products?
Catalase. hydrogen peroxide. Water + Oxygen
5 of 6
Why are enzymes known as biological catalysts?
Because they speed up the rate of a chemical reaction without being used up. They do this by lowering the activation energy
6 of 6

Other cards in this set

Card 2

Front

What are the characteristics of enzymes?

Back

Enzymes are globular proteins. They are soluble in water due to the presence of many hydrophilic side groups on their constituent amino acids

Card 3

Front

What factors affect enzymes?

Back

Preview of the front of card 3

Card 4

Front

Explain the effect of the non competitive inhibitor?

Back

Preview of the front of card 4

Card 5

Front

Give an example of an enzyme, its substrate and the products?

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 »