enzymes and nutrition year 9

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Enzymes are...

• nucleic acids
• proteins
• lipids
• carbohydrates

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

What is another name for enzymes?

• chemical catalysts
• microorganisms
• biological catalysts
• inorganic catalysts

Letter D...

• active site
• enzyme
• substrate
• products

Which 2 factors can affect the rate of enzyme activity?

• Light intensity

• Temperature

• pH

• Oxygen concentration

enzymes increase the rate of reaction

• true

• false

enzymes break down ____________ into soluble products

• Catalysts

• Substrates

• Active site

• Substances

Which of these is NOT an enzyme

• amylase

• protease

• lipase

• glycerol

With what 3 letters do enzymes typically end?

• -ose
• -ase
• -ese
• -tic