This free course, General principles of cellular communication, explains cell-signalling pathways in general terms and identifies some of the universal characteristics of signalling pathway components.

Learning outcomes:

• Describe in general terms how extrinsic signals activate cell-signalling pathways to elicit cellular responses.
• Describe how cell-signalling processes facilitate quorum sensing in bacteria.
• Outline the diverse roles played by proteins in cellular communication and how various proteins can function together in a signalling pathway.
• Relate the activities and properties (including domain structure) of proteins to their roles in signalling.