MicrobeWorld

Biosphere in a Bottle - What would happen if you covered your jars or bottles with different colored plastic wrap?

If the bottles or jars are covered with colored cellophane, different microbes will grow because different ones need different colors of light to thrive. For example, purple sulfur bacteria need red to near infrared light, while green sulfur bacteria need green to red light. And cyanobacteria need blue to green light.