Enzymes & pH

______________ are catalysts for chemical reactions in living things.

• Acids

• Bases

• Substrates

• Enzymes

When an enzyme in NOT in a living thing, it is called a ________________.

• substrate

• activation energy

• catalyst

• protein

Enzyme are made out of ________________.

• carbohydrates

• lipids

• nucleic acids

• protein

Tags

NGSS.HS-LS1-6

Enzymes work by __________________ the activation energy of a reaction.

• raising

• lowering

• fixing

• breaking

Tags

NGSS.HS-PS1-5

Enzymes are substances that ______________ chemical reactions.

• slow down

• don't affect

• speed up

• don't like

Tags

NGSS.HS-PS1-5

Which factor does NOT affect the rate of enzyme catalyzed reactions?

• Temperature

• Surface area

• Color

• pH

• Concentration

How do enzymes speed up biochemical reactions?

• By releasing energy

• By absorbing energy

• By lowering activation energy

• By raising activation energy

Tags

NGSS.HS-PS1-4

Enzymes do NOT get used up in the reaction.

• True

• False

The substance that an enzyme reacts with is called the ______________.

• energy

• protein

• substrate

• pH

The _______________________ model helps illustrate how each enzyme only works on one specific substrate.

• enzyme-substrate

• bits and pieces

• lock-and-key

• matter and energy