So this is a process that we call signal transduction. What happens during signal transduction is an extracellular signal molecule, so this is our ligand, binds to our membrane receptor, and …

Transduction In transduction, viruses that infect bacteria move short pieces of chromosomal DNA from one bacterium to another "by accident." Yep, even bacteria can get a virus! The viruses …

If you’re nervous before a test or competition, your adrenal gland is likely to be pumping out epinephrine. When epinephrine binds to its receptor on a muscle cell (a type of G protein …

Learn how signals are relayed inside a cell starting from the cell membrane receptor. The chains of molecules that relay intracellular signals are known as intracellular signal transduction …

Types of signaling molecules and the receptors they bind to on target cells. Intracellular receptors, ligand-gated ion channels, G protein-coupled receptors, and receptor tyrosine kinases.

Learn about the cell cycle and its role in growth, development, and reproduction through free resources on Khan Academy.

The cholera toxin triggers a signal transduction pathway. This process starts when molecules outside the cell interact with cell receptors, setting off a chain of events.

How the nucleotide sequence of an mRNA is translated into the amino acid sequence of a polypeptide (protein).

Explore how alterations in signal transduction pathways affect cellular communication. Understand the role of G protein-coupled receptors in initiating responses.

Unit 4: Cell communication and cell cycle Unit mastery: 0% Cell communication Signal transduction Changes in signal transduction pathways Feedback Cell cycle Regulation of cell …