Enzymes and pH

What is being represented by the letter B in the image?

• Substrate

• Enzyme

• Substrate

• Product

Which enzyme is most efficient in a basic solution?

• A

• B

Every enzyme has a optimal temperature and pH. True or False?

• True 

• False

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

• lower

• higher

• the same

• none of the above

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above

How does pH affect enzyme activity?

• Enzymes work best at a specific pH

• Enzymes are not affected by pH

• Enzymes work best at any pH

• Enzymes are destroyed by pH

What happens to an enzyme when the pH is too high or too low?

• It becomes more active

• It becomes denatured

• It becomes more stable

• It becomes more acidic

Which of the following is a common method to measure the effect of pH on enzyme activity?

• Using a pH meter

• Using a thermometer

• Using a barometer

• Using a hygrometer

What is the optimal pH range for most human enzymes?

• 1-3

• 4-6

• 7-8

• 9-11

Which enzyme works best in acidic conditions?

• Pepsin

• Amylase

• Lipase

• Trypsin