010100;">C</span><span style="font-size: 8pt; font-style: italic; color: #010100;">L</span><span style="font-style: italic; color: #010100;"> + C</span><span style="color: #010100;">.) This rate equation is often used to describe enzyme-catalyzed reactions and microbial growth. It produces first-order behavior at low concentrations and zero-order behavior at higher concentrations. Note that for decay reactions, </span><span style="font-style: italic; color: #010100;">C</span><span style="font-size: 8pt; fon