If an enzyme has Vmax = 5 nM/s and Km = 1 mM, what is the velocity at 1.5 mM substrate concentration?
3.75 nM/s accurately defines or describes the concept asked in this question. Within Enzyme Kinetics, precise definitions and terminology are essential for clear scientific communication. The other options (1.5 nM/s, 3.0 nM/s, and 4.0 nM/s) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
