Biology Chapter 3 Pop Quiz

What is the effect of increasing temperature on enzyme activity?

• It has no effect on enzyme activity

• It initially increases enzyme activity, but then denatures the enzyme

• It decreases enzyme activity

• It increases enzyme activity indefinitely

At what temperature do most enzymes work best?

• Room temperature

• Boiling temperature

• Freezing temperature

• Optimal temperature

How does pH affect enzyme activity?

• It increases the enzyme's stability

• It alters the enzyme's shape and charge, affecting its ability to bind to the substrate.

• It has no effect on enzyme activity

• It decreases the enzyme's specificity

What is the optimal pH for most enzymes?

• pH of 0

• pH of around 7

• pH of 5

• pH of 14

How does increasing substrate concentration affect enzyme activity?

• It increases enzyme activity initially, but eventually levels off

• It has no effect on enzyme activity

• It decreases enzyme activity

• It causes the enzyme to stop working completely

What is the relationship between substrate concentration and enzyme activity?

• There is no relationship between substrate concentration and enzyme activity.

• Enzyme activity remains constant regardless of substrate concentration.

• The relationship is that enzyme activity decreases with increasing substrate concentration.

• The relationship is that enzyme activity increases with increasing substrate concentration.

What are enzyme inhibitors and how do they affect enzyme activity?

• Enzyme inhibitors only affect the color of the enzyme, not its activity.

• Enzyme inhibitors decrease enzyme activity by binding to enzymes and affecting their function.

• Enzyme inhibitors increase enzyme activity by binding to enzymes and enhancing their function.

• Enzyme inhibitors have no effect on enzyme activity.

What are enzyme cofactors and how do they affect enzyme activity?

• Enzyme cofactors are proteins that inhibit enzyme function and decrease enzyme activity.

• Enzyme cofactors are only found in plant enzymes and have no effect on enzyme activity.

• Enzyme cofactors are unnecessary for enzyme function and have no impact on enzyme activity.

• Enzyme cofactors are non-protein molecules that help enzymes function properly and affect enzyme activity by assisting in the catalytic reaction.

Give an example of a coenzyme.

• Glucose

• NAD+ or FAD

• ATP

• RNA