Enzymes

Catalysts made of protein

An interactive lesson with 5 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Enzymes lower activation energy at a shaped active site.
• v = Vmax[S]/(Km + [S]); Km = substrate at half speed.
• Heat denatures enzymes; competitive inhibitors raise Km.

Steps

1. A pocket that fits
2. Fit the curve
3. Half speed
4. A competitive inhibitor
5. Too hot