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Enzymes 2
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Catalysts

speed up the rate of the reaction.

lowers the energy input required for a chemical reaction to happen

remains unchanged at the end of the reaction

skool

Slide 2

 

Enzymes

Enzymes are Biological catalysts

Enzymes control chemical reactions that take place in the cytoplasm.

Catalase in an example of an enzyme made by living cells

Slide 3

 

Catalase

The enzyme catalase breaks down the waste substance hydrogen peroxide into water and oxygen.

Hydrogen peroxide oxygen +water

(enzyme)

catalase

(substrate)

(products)

Slide 4

 

Degradation reactions

animation

Slide 5

 

Synthesis Reaction

Active site

es

Slide 6

 

Degradation reactions

Starch

Maltose

Slide 7

 

Enzyme activity

Temperature and pH affect the activity of an enzyme.

Slide 8

 

Optimum Condition

Enzymes function best or are most active in specific conditions known as optimum

conditions.

Slide 9

 

Degradation reaction

Slide 10

 

Synthesis reaction

Glucose-1-phosphate

Starch

Slide 11

 

Properties of enzymes

Made of protein.

Speed up reactions.

Are specific.

Not used up during the reaction.

Require optimum conditions at which they work best.

At high temperature they become denatured

Slide 12

 

Lock and Key

Slide 13

 

Synthesis reactions

Glucose-1-phosphate Starch

(Substrate)

(enzyme)

(product)

phosphorylase

 

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