06042022 Introduction to Enzyme

Introduction to Enzyme

What Are Enzymes?

• Are catalysts that speed up the rate of a chemical reaction without being changed or used up in the reaction

• Are proteins

• Are biological catalysts (biological because they are made in living cells, catalysts because they speed up the rate of chemical reactions without being changed)

What Are Enzymes?

• Enzymes are necessary to all living organisms as they maintain reaction speeds of all metabolic reactions (all the reactions that keep an organism alive) at a rate that can sustain life

What Are Enzymes?

How Do Enzymes Work?

Effect of Temperature on Enzyme Function

Effect of pH on Enzyme Function

Multiple Choice

Enzymes are considered to be....

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid

Multiple Select

Tick all the properties of enzyme.

• speed up metabolic reaction

• remain unchanged at the end of reaction

• made of fats

• known as biocatalysts

Multiple Choice

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Multiple Choice

Any substance that is acted upon by an enzyme is called a(n)?

• Coenzyme
• Substrate
• Vitamin
• Polypeptide

Multiple Choice

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

Multiple Choice

Letter D...

• active site
• enzyme
• substrate
• products

Multiple Choice

Letter B...

• active site
• enzyme
• substrate
• products

Multiple Choice

Letter C...

• active site
• enzymes
• substrate
• products

Multiple Choice

Letter E...

• active site
• enzyme
• substrate
• products

Multiple Choice

Is this diagram correctly labelled?

• Yes.
• No.

Fill in the Blanks