The coronavirus is an RNA virus. An RNA is chemically more susceptible than a DNA. Errors occur more frequently during copying, and the virus mutates. Our immune system reacts slowly to it, vaccine development is more difficult. Author: 3sat/nano/Docstation/Johan von Mirbach/Anna Grün/Riccardo Gies
In this video, I explain: the molecular process of translation, the function and structure of the transfer/t-RNA, the translation of the messenger/m-RNA code into an amino acid sequence, the use of the code sun to translate the m-RNA code Original: "Chemistry and biology - get it!" O
Explore what makes Mercury so mysterious and what scientists are learning from NASA's first Mercury mission in 30 years. For the MESSENGER mission, NASA launched a probe and guided it toward Mercury using a technique called "solar sailing." The probe is studying the make-up of the planet's inner cor
In this video, I explain the transcription process, the molecular difference between RNA and DNA molecules, why RNA molecules contain the base uracil instead of thymine, and where transcription takes place in cells. For simplicity, I will not explain RNA processing, the process of splicing, and the
For life to develop, it needs amino acids, sugars, bases and fats. In addition, RNA, an acid and a kind of chemical Morse code - this is how chains with building blocks are created. But it is only a protective lipid shell that turns the chains into a cell. Author: ZDF/Terrax/R. Schlosshan/F. Hädeck
In the regenerative phase, inflammation-resolving messenger substances are released. Macrophages of type M2 dispose of cell and tissue debris. At the same time, other immune cells begin the first repair measures. Author: 3sat/nano/DOCUVISTA Filmproduktion/Marilena Schulte,Maike Wurtscheid/Jörg Beck
For more Science Videos: https://lt.org/ * Massive algae blooms appear in spring in certain bodies of water only to vanish within a number of weeks. In this video, BERNHARD M. FUCHS analyzes the degradation of such algae, exploring which organisms are involved and what they actually do. * Employing
A hormone is a chemical messenger that is secreted (or released) into our bloodstream by specific organs known as glands. Hormones regulate (or control) many processes in our body, including blood glucose levels, water content in blood, general growth, and blood pressure – just to name a few. They
For more Science Videos: https://lt.org/ * Traditionally, viruses have been viewed as little more than killing machines. In this video, TOMÁS ALARCÓN SCHUMACHER shows how certain viral infections can have a positive effect on their hosts’ evolutionary trajectories. * Focusing on chronic infections
This video excerpt from NOVA examines the dilemma some people face when they are deciding whether to undergo genetic testing. Journalist Catherine Elton describes her decision to refuse a test for BRCA1, a mutation that signals an increased risk of breast and ovarian cancers, despite the history of
In this video segment adapted from NOVA scienceNOW, learn how scientists are hoping to better understand the biology of dinosaurs by studying the insides of fossil bones. Hear about the accidental discovery of dinosaur soft tissue by paleontologist Dr. Mary Schweitzer, and how this tissue enables sc
This video excerpt from NOVA examines a genetic screening technique called preimplantation genetic diagnosis, or PGD. PGD enables researchers to identify mutations in an embryo’s DNA that can lead to birth defects and more than 300 diseases, including Huntington’s, cystic fibrosis, and some cancers.
