Enzyme Thinking Questions (Teacher paced)

Some enzymes break something down; other enzymes make something bigger. Each enzyme is specific- it can only break down one specific molecule or it can only make one specific molecule.

• True

• False

What is the name of the molecule(s) that an enzyme works upon?

• Enzyme

• Active Site

• Product

• Substrate

This enzyme is...

• breaking apart the substrate into smaller parts

• putting substrates together to make a bigger product

The enzyme pictured here is...

• breaking apart the substrate into smaller parts

• putting substrates together to make a bigger product

Tags

NGSS.HS-LS1-7

What part of the enzyme grabs onto the molecule it works on, so that it can break it apart or put the pieces together?

• Enzyme

• Active Site

• Product

• Substrate

What is the name for the enzyme that breaks down the milk sugar lactose?

• Lactase

• Petidase

• Maltase

• Lactose

• Lipase

Tags

NGSS.MS-LS3-1

Enzymes are SPECIFIC. The active site of the enzyme attaches to and works on only one ______. Just like a lock and key.

• Enzyme

• Active Site

• Carbohydrate

• Substrate

Why can't lactase break down sucrose?

• Sucrose is made out of too many repeating parts

• Sucrose doesn't fit in the active site of lactase

• Sucrose is a different color from lactose

• Lactase only breaks down sugars

Click all true statements

• Using lactase lowers/reduces the amount of energy needed to break lactose into glucose and galactose

• Energy used by the cell to do a chemical reaction (like breaking a molecule) is called activation energy

• Enzymes lower the amount of activation energy needed for a reaction to take place

• Enzymes increase the amount of activation energy needed for a reaction to take place

Tags

NGSS.HS-PS1-5

Each enzyme has an ideal temperature and an ideal pH. When the conditions are perfect, the enzyme's rate of reaction is highest.

• True

• False