Biology- Enzymes

?
  • Created by: Kitsune
  • Created on: 07-07-16 10:22
What reactions build up molecules?
Anabolic molecules
1 of 16
What reactions break down molecules?
Catabolic reactions
2 of 16
What is a catalyst?
A substance that speeds up the reaction but doesn't change the product and remains unchanged itself
3 of 16
What are enzymes?
Proteins, that act as biological catalysts
4 of 16
What does the enzyme work on?
The substrate
5 of 16
Where does the substrate fit in?
The active site
6 of 16
Can enzymes work on different substrates?
No, they are specific
7 of 16
Give examples of intracellular enzymes
Catalase (breaks H2O2), phosphorylase (builds glucose into starch)
8 of 16
Give examples of extracellular enzymes
Lipase (breaks fats), amylase (breaks starch into maltose)
9 of 16
What are the two factors that affect enzymes?
Temperature and pH
10 of 16
How does temperature affect enzyme activity?
Higher temperature speeds up the movement of substrates and enzymes so they are more likely to collide
11 of 16
How can enzymes become denatured by temperature?
They vibrate so much as they take in energy that their active site becomes deformed
12 of 16
How does pH affect enzymes?
Changing pH may result in denaturation
13 of 16
What makes the binding of a substate and enzyme more likely?
Activators
14 of 16
What makes the binding of a substate and enzyme less likely?
Inhibitors
15 of 16
Why are enzymes os useful?
They can be reused and they are specific
16 of 16

Other cards in this set

Card 2

Front

What reactions break down molecules?

Back

Catabolic reactions

Card 3

Front

What is a catalyst?

Back

Preview of the front of card 3

Card 4

Front

What are enzymes?

Back

Preview of the front of card 4

Card 5

Front

What does the enzyme work on?

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 and digestion resources »