Intro: Enzymes

What is the primary composition of most enzymes?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

What is the area called where a substrate binds to an enzyme?

• active site

• puzzle piece

• opening

Enzymes have the ability to ____________ reactions.

• speed-up

• decrease

• slow down

What is the term for the specific area on an enzyme where a substrate binds?

• Binding pocket

• Active site

• Catalytic region

• Reaction center

What is the main role of enzymes in biological reactions?

• To slow down reactions

• To change the products of reactions

• To speed up reactions

• To prevent reactions from occurring

TRUE / FALSE

Lactase is an enzyme for lactose.

• TRUE

• FALSE

Enzymes that can get used over and over again in a reaction are called a __________.

• catalyst.

• mixture.

• suspension.

Why are enzymes considered catalysts?

• They are consumed during the reaction.

• They can be used repeatedly in reactions.

• They change the type of products formed.

• They require high temperatures to function.

TRUE / FALSE

ALL enzymes have the same ideal environmental conditions they prefer in the body.

• TRUE

• FALSE

What happens to an enzyme if its environment changes significantly from its ideal pH or temperature?

• It becomes more efficient.

• It changes its substrate.

• It becomes denatured and loses its function.

• It starts producing different products.