Presentation is loading. Please wait.

Presentation is loading. Please wait.

Very important proteins

Similar presentations


Presentation on theme: "Very important proteins"— Presentation transcript:

1 Very important proteins
Enzymes VIP’s! Very important proteins

2 Proteins that start up or speed up chemical reactions.
Enzymes Proteins that start up or speed up chemical reactions.

3 5.5A Activation E is the E needed to start a chemical reaction Catalysts lower that amount of E needed So, catalysts speed up chemical reactions Enzymes are catalysts fir chemical reactions in living things

4 A B Substrate molecules Active Site of the Enzyme molecule

5 High School | Science - Mr. Wanamaker

6 How enzymes work:

7 A B Active Site Enzyme molecule

8 B A Active Site Enzyme molecule

9 Enzyme molecule lowering the …???
Substrates that are brought together REACT (change!) A B active site Enzyme molecule lowering the …???

10 Product molecule Is different! Enzyme molecule is… active site
Unchanged so can be reused

11 Enzyme Substrate Active Site- the important part of an enzyme
Fits the active site Active Site- the important part of an enzyme

12

13 Enzyme + Substrate

14 The reaction begins

15 Product Enzyme +Substrates Enzyme

16 The substrate is broken
Hydrolysis Reaction What kind of reaction is this? The substrate is broken into small molecules.

17 Small substrate molecules
Synthesis Reaction What kind of reaction is this? Small substrate molecules build a large product.

18 Name all of the parts of this reaction.
Enzyme + Substrate Name all of the parts of this reaction. Enzyme Enzyme Substrate Product

19 An enzyme. What kind of organic molecules are they made of?

20 Active Site Enzyme – Substrate Complex
- place where the substrate fits

21

22 The Lock and Key Hypothesis
Enzymes are specific: They only work on specific substrates The Lock and Key Hypothesis

23 Naming Enzymes Take the name of the substrate, add “ase”, and you have named the enzyme that affects it!

24 Examples Maltase Lipase Protease Enzymes are specific
What enzyme breaks down lactose?

25 Factors that affect the rate of enzyme action
The concentration of the enzyme

26 Factors that affect the rate of enzyme action
The concentration of the substrate (s)

27 Enzyme reactions are affected by:
pH All reactions have a pH in which they work best. They are different for different enzymes

28 Temperature Enzyme reactions are affected by:
All reactions have a pH in which they work best

29 Denaturation Changing the shape of the protein (like an enzyme), and it no longer works


Download ppt "Very important proteins"

Similar presentations


Ads by Google