Exploring Enzymes in Biology

Why do cells need enzymes?

• To create new cells

• To store energy

• To speed up chemical reactions

• To produce light

What is the primary function of a catalyst in a chemical reaction?

• To change the products of the reaction

• To slow down the reaction

• To speed up the reaction

• To alter the reactants

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NGSS.HS-PS1-5

What is an active site on an enzyme?

• The part of the enzyme that changes shape

• The area where a molecule attaches

• The part of the enzyme that gets destroyed

• The area where the enzyme stores energy

What term is used to describe the molecule that attaches to the active site of an enzyme?

• Reactant

• Product

• Substrate

• Catalyst

What happens to the substrate during the enzyme-catalyzed reaction?

• It evaporates

• It remains unchanged

• It is converted into a different molecule

• It becomes part of the enzyme

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What is true about the enzyme at the beginning and end of a chemical reaction?

• It remains the same

• It changes shape

• It becomes inactive

• It is consumed in the reaction

What would happen if an enzyme changed during a reaction?

• It would no longer be an enzyme

• It would become a different enzyme

• It would speed up the reaction more

• It would stop the reaction

What does the suffix 'ase' in an enzyme's name indicate?

• It is a lipid

• It is a protein

• It is a sugar

• It is an enzyme

Which enzyme is responsible for breaking down lipids?

• Amylase

• Lactase

• Protease

• Lipase

Tags

NGSS.MS-LS1-7

What does lactase break down?

• Lipids

• Proteins

• Glucose

• Lactose