Activators help to slow down chemical reactions.

• True
• False

False

Poisons like cyanide are chemical substances that can permanently block the active site of an enzyme.

• True
• False

True

In the Enzyme lab, catechol is the enzyme that speeds up the change to benzoquinone.

• True
• False

False

An enzyme is a catalyst that speeds up a reaction until it is consumed.

• True
• False

False

Enzymes ___________ activation energy needed to complete a reaction.

• increase
• decrease
• do nothing to

decrease