An Adapter Molecule; tRNA
Detailed explanation of mRNA Translation
Transcription & Translation: Transcription (Advanced) Transcription is the process by which the information in DNA is copied into messenger RNA (mRNA) for protein production. Transcription begins with a bundle of factors assembling at the promoter sequence on the DNA (in red). Here, two transcription factors are already bound to the promoter. Other proteins arrive, carrying the enzyme RNA polymerase (in blue). 3D Animations - Transcription & Translation: Transcription (Advanced)
Under the Microscope #6 -- Killer T-cells In this video we see a killer T-cell of the immune system attacking a cancer cell. Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday for the next few weeks and you can see them here: http://bit.ly/A6bwCE Professor Gillian Griffiths said: “Cells of the immune system protect the body against pathogens. If cells in our bodies are infected by viruses, or become cancerous, then killer cells of the immune system identify and destroy the affected cells. Cytotoxic T-cells are very precise and efficient killers.
Conversations with History: Ocean Voyages with Sylvia Earle
Une Vie Extraterrestre. - une vidéo High-tech et Science
ScienceTube: Science Videos, Lectures and Science News
It's Not Magic On The Mountain, It's A Rain-Making Machine Science