Question
Lactose can be removed from milk by passing the milk through a column of alginate beads to which immobilized lactase is bound. What is an advantage of immobilizing the enzyme?
A. It creates more active sites.
B. The alginate beads act as a coenzyme.
C. It lowers the activation energy of the reaction.
D. It allows the product to be separated easily from the enzyme.
▶️Answer/Explanation
Markscheme
D
Question
What is the advantage of using lactase in an immobilized state in the food manufacturing industry?
A. It functions within cells.
B. It dissolves in multiple solvents.
C. It converts cellulose into glucose.
D. It is less likely to become denatured.
▶️Answer/Explanation
Markscheme
D
Question
What effect do changes in pH have on enzymes?
A. All enzymes increase in activity as pH increases.
B. The activity of all enzymes is reduced by a pH below or above 7.
C. Low pH causes reversible denaturation in all enzymes.
D. Extreme pH can alter the active site of all enzymes.
▶️Answer/Explanation
Markscheme
D