Effect of Temperature and pH on Enzymes Quiz

What is the groove on the surface of an enzyme called?

• Active site

• Denatured

• Substrate

• Lock and key

What is the molecule that the enzyme reacts with called?

• Substrate

• Denatured

• Lock and key

• Active site

What happens to the enzyme activity as temperature increases?

• Stays the same

• Increases

• Decreases

• Stops completely

What is the optimum temperature for most human enzymes?

• 50 degrees Celsius

• 25 degrees Celsius

• 100 degrees Celsius

• 37 degrees Celsius

What happens to the enzyme activity at temperatures higher than the optimum?

• Stops completely

• Increases

• Decreases

• Stays the same

What happens to the shape of the active site at high temperatures?

• It changes shape

• It remains the same

• It becomes larger

• It becomes smaller

What is the term used when the active site of an enzyme is no longer able to catalyze a reaction?

• Substrate

• Denatured

• Lock and key

• Optimum

What is the effect of pH on enzyme activity?

• Stops completely

• No effect

• Increases activity

• Decreases activity

What is the term for the maximum activity of an enzyme at a specific pH?

• Alkaline pH

• Optimum pH

• Acidic pH

• Neutral pH

What happens to the enzyme activity if the pH becomes more acidic or more alkaline?

• Stops completely

• Stays the same

• Increases

• Decreases