Chemistry and Enzymes

Label the parts of the enzyme model

a

b

c

d

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Enzyme

Substrate

Click on the temperature that this enzyme is having optimum activity.

Enzymes are...

• nucleic acids
• proteins
• lipids
• carbohydrates

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which enzyme is most efficient in a basic solution?

• A
• B

Tags

NGSS.HS-PS1-2

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered denature
• The enzymes' amino acid sequence changes.
• The enzymes remain the same

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

What happens to an enzyme when it is denatured?

• Activation energy is lowered.
• It becomes stronger.
• It loses its shape.
• Activation energy is raised.

What is the purpose of an enzyme?

• control how many reactions occur

• raise activation energy

• give permission for the reaction

• speed up chemical reactions

Tags

NGSS.HS-LS1-7

Match the following Macromolecules to its structure

• Carbohydrate

• 
• Protein

• 
• Lipid

• 
• Nucleic Acids

• 

Tags

NGSS.HS-LS1-6

Enzyme can be used again and again

• True

• False