Enzymes - How Do They Work?

What is the role of enzymes in the body?

• They slow down chemical reactions

• They speed up chemical reactions

• They have no effect on chemical reactions

What is a catalyst?

• A substance that speeds up reactions

• A substance that slows down reactions

• A substance that stops reactions

What happens if you add more enzyme to a reaction?

• The reaction will continue

• The reaction will stop

Enzymes are [ reusable | not reusable ].

• reusable

• not reusable

What is starch?

• A) A protein

• B) An energy storage molecule

• C) A fat

• D) A vitamin

Which part of the enzyme interacts with the substrate?

• Active site

• Product

• Enzyme body

• Substrate

What is the role of enzymes in a reaction?

• Increase activation energy

• Decrease activation energy

• Change the substrate permanently

• Stop the reaction

True or False: Enzymes interact with many different kinds of substrates.

• True

• False

Which enzyme is found in the stomach?

• Pepsin

• Lipase

• Amylase

• Trypsin

Where does pepsin function best?

• In the mouth

• In the stomach

• In the small intestine

• In the large intestine