'Enzymes' Grade 9

What is the purpose of an enzyme?

• give permission for the reaction

• speed up reactions

• raise activation energy

• control how many reactions occur

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The enzymes' amino acid sequence changes.

• The shapes of the enzyme are altered or denatured

• The enzymes remain the same

What happens to an enzyme when it is denatured?

• Activation energy is lowered.

• It loses its shape.

• It becomes stronger.

• Activation energy is raised.

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.

• The enzyme’s activity increases as pH increases 5.0 to 9.0

• The optimum pH of the enzyme is 5.8

• The enzyme’s activity is greater around pH of 8.0 .

Most enzymes are composed of .....

• Lipids

• Proteins

• Carbohydrates

• Nucleic Acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Enzymes in your body probably work best at which of the following temperatures>

• 25^oC

• 37^oC

• 98^oC

• 210^oC

Where do substrates bind on an enzyme?

• voltage-gated channels

• calcium channels

• surface receptor

• active site

With what 3 letters do enzymes typically end?

• -ose

• -ese

• -ase

• -tic

What is another name for enzymes?

• chemical catalysts

• biological catalysts

• microorganisms

• inorganic catalysts

Letter B...

• active site

• substrate

• enzyme

• products