STAAR Review 4 part 1

STAAR Review 4

Multiple Choice

Enzymes are proteins that catalyze chemical reactions. a catalyst ....

• slows down reactions

• speeds up reactions

Multiple Choice

Enzymes are able to speed up (catalyze) chemical reactions because they lower....

• the heat released

• the energy needed to start the reaction

• The substrate needed for the reaction

Multiple Choice

If an enzyme is in unfavorable conditions (too hot, cold, too acidic) they will most likely...

• freeze up

• twist into a different 3D shape

• Denature- lose its shape and become useless