Quiz - Enzymes and Biochemical Reactions

What is the role of enzymes in chemical reactions?

• Slow down the reaction

• Raise the temperature of the reaction

• Lower the activation energy

• Eliminate the need for reactants

Enzymes are a type of

• Lipid

• Nucleic Acid

• Protein

• Carbohydrate

Tags

NGSS.HS-LS1-1

The substance an enzyme acts on is called the

• Product

• Inhibitor

• Catalyst

• Substrate/Reactant

Where does the substrate bind on an enzyme?

• Active site

• Passive zone

• Lipid bilayer

• Mitochondria

What happens to an enzyme after a chemical reaction?

• It is used up

• It disappears

• It remains unchanged and can be reused

• It becomes part of the product

Enzymes speed up reactions by

• Increasing the number of products

• Raising the activation energy

• Lowering the activation energy

• Removing oxygen from the reaction

A denatured enzyme has

• A stronger bond with the substrate

• A changed shape that affects its function

• More activation energy

• A faster reaction rate

Which condition can cause an enzyme to denature?

• Correct substrate

• Normal body temperature

• Extreme pH or temperature

• Water availability

What is a product in a chemical reaction?

• A molecule that breaks down enzymes

• The end result of a chemical reaction

• The site where the enzyme binds

• Another name for a substrate

What type of macromolecule are enzymes made of?

• Sugars

• Proteins

• Nucleotides

• Fatty acids

Tags

NGSS.HS-LS1-1