Michaelis–Menten graph with Vmax, ½Vmax and Km

An example figure from the Enzyme Activity generator.

Graph of rate of reaction against substrate concentration with no numbers on the axes: one curve rising steeply and levelling off under a dashed line labeled Vmax, with a dot at half that height joined by dashed lines to the y-axis, labeled ½Vmax, and down to the x-axis, labeled Km — A Michaelis–Menten curve: the rate of an enzyme-catalysed reaction rises steeply as substrate is added, then levels off as every active site becomes busy. A dashed line across marks the top rate, Vmax. A dot marks where the rate is half of Vmax, with dashed lines across to the y-axis, labeled ½Vmax, and down to the substrate concentration that gives it, labeled Km.

Edit this figure Download PNG

Editing opens it in Enzyme Activity with these settings, to change anything and copy or download your own.

Answer key

No inhibitor: Vmax and Km of the enzyme on its own

Free to use in your tests, worksheets, slides or anything else, no credit needed. Public domain under CC0 1.0. How to reuse our figures

More Enzyme Activity examples

Make your own in Enzyme Activity →