Discuss the process of signaling in single-cell organisms

Within-cell signaling allows bacteria to respond to environmental cues, such as nutrient levels, some single-celled organisms also release molecules to signal to each other.

What You’ll Learn to Do

• Describe how single-celled yeasts use cell signaling to communicate with one another
• Relate the role of quorum sensing to the ability of some bacteria to form biofilms

Learning Activities

The learning activities for this section include the following:

• Signaling in Yeast
• Signaling in Bacteria
• Self Check: Signaling in Single-Celled Organisms