Which of the following is a key difference between transport kinetics and Michaelis-Menten enzyme kinetics?

• A. Transport kinetics occur in the cytoplasm, while enzyme kinetics occur in the nucleus.
• B. Transport kinetics are faster than enzyme kinetics.
• C. Transport kinetics use ATP, while enzyme kinetics do not.
• D. Transport kinetics involve solute movement, while enzyme kinetics involve substrate conversion.

Answer: (D)