Unit - 5 

Cell communication – overview – types of cell signaling – signal molecules – signal amplification – receptor types – quorum sensing.  

Video Lectures (Watch the video files with headphone for audio clarity and note the points in course journal (CJ), submit the same to course teacher & get signed) (to know what is CJ click HERE). To find the key points that should be there in CJ, click HERE

1. Introduction & an overview of Signal transduction / cell-cell communication / signal transduction pathway /Molecular events of signal transduction - Lect 1; 

• For a detailed cell signaling video in Tamil click HERE 

• For an excellent video lecture on signal transduction or cell-cell communication click HERE 

2.  Types of cell signaling  - Lect 2; for an explanation in Tamil click HERE

3.  Characteristic features of signal transducing systems - Lect 3

4.  Explanation about cell surface receptors and intracellular receptors - Lect 4

5. Process of signal amplification in cell - Lect 5 ; check out this video also

6. Quorum sensing in bacteria - Understandable in few mins

• Quorum sensing basic explained in Tamil (only as audio) click Link 1 and Link 2

7. A comparison between Signal transduction and quorum sensing - Lect 6