Enzymes and Macromolecules

What is activation energy?

• The energy required to stop a chemical change from happening

• The energy required to make an enzyme

• The energy required to push a ball up a hill

• The energy required for a chemical change to happen

Tags

NGSS.HS-PS1-4

What effect does an enzyme have on activation energy?

• Decreases the activation energy

• Increases the activation energy

• Does not change the activation energy

Enzymes are catalysts. What is a catalyst?

• Causes a chemical reaction to occur

• Slows down a chemical reaction

• Speeds up a chemical reaction

• Stops a chemical reaction from occuring

Which of the following is the substrate?

• A

• B

• C

Tags

NGSS.HS-LS1-6

Which of the following is the active site?

• A

• B

• C

Which of the following is the enzyme?

• A

• B

• C

Another word for substrate is...

• Reactant

• Product

Does a chemical change need an enzyme to occur?

• Yes

• No

When an enzyme is outside of its temperature range (it is too hot or cold), it can denature. Denaturing means...

• The enzyme no longer functions

• The substrate changes shapes

• The enzyme changes shapes

• The active site still functions

How is an enzyme similar to a lock and key?

• All enzymes work with all substrates

• The substrate fits perfectly into the enzyme's active site

• All substrates fit into any enzyme

• Specific enzymes work with only to specific substrates