Given that glucokinase has a higher Km than hexokinase, what does this imply about its function in the liver?

• A. Glucokinase is more active at low glucose concentrations.
• B. Glucokinase is inhibited by glucose 6-phosphate at high concentrations.
• C. Glucokinase is less efficient than hexokinase at all glucose concentrations.
• D. Glucokinase is more active at high glucose concentrations, allowing the liver to manage excess glucose.

Answer: (D)