Differentiate allosteric enzymes from Michaelis-Menten enzymes.

• A. Allosteric enzymes show hyperbolic kinetics and generally lack cooperative binding.
• B. Allosteric enzymes show sigmoidal (cooperative) kinetics and are regulated by effectors that modify activity.
• C. Allosteric enzymes are inactive; MM enzymes are always active.
• D. Both display hyperbolic kinetics and are regulated only by substrate concentration.

Answer: (C)