PBS
When Ancient People Changed Their Own DNA
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SciShow
Old Pill, New Trick
One team of researchers may has found a promising lead in the fight to cure or prevent Alzheimer's. And another team is helping us understand how Hydras regrow their heads. Hosted by: Hank Green
SciShow
Why You Should Never Put Tomatoes in the Fridge!
Without refrigerators, we'd have spoiled milk, moldy cheese, and warm sodas. However, there are some foods that don't fare so well in a chilly fridge, including tomatoes. Hosted by: Olivia Gordon
SciShow
Old Pill, New Trick
One team of researchers may has found a promising lead in the fight to cure or prevent Alzheimer's. And another team is helping us understand how Hydras regrow their heads.
Crash Course
Evolutionary Development: Chicken Teeth - Crash Course Biology
Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes...
SciShow
These Ant Paramedics Save Their Injured Comrades
A species of ant has been discovered to rescue and tend to the battle wounds of other ants injured while hunting, and scientists think that this is the first time this behavior has ever been observed in insects.
Amoeba Sisters
Gene Regulation and the Order of the Operon
Explore gene expression with the Amoeba Sisters, including the fascinating Lac Operon found in bacteria! Learn how genes can be turned "on" and "off" and why this is essential for cellular function.
Amoeba Sisters
How Cells Become Specialized
How do cells in your body differentiate into other types of cells? Explore cell specialization featuring stem cells and their role in cell differentiation.
SciShow
Why Are Some U.S. Cities Declaring Racism a Public Health Crisis?
In addition to being a serious social issue, racism is also a serious challenge to public health. In fact, over the last year and a half, dozens of cities have declared racism a public health crisis - and today, we here at SciShow will...
SciShow
Atavisms: 4 Lost Traits That Returned
Every once in a while, traits thought to be lost forever suddenly reappear, like a dolphin or a whale born with complete hind limbs! Known as atavisms, these occurrences can teach us all sorts of things, like how limbs actually grow.
SciShow
How Mind-Controlling Parasites Teach Us About Brains
Some parasites can hijack the brains of their victims and cause them to behave in strange ways, but how they do it, and do we humans need to be worried?
Bozeman Science
Signal Transmission and Gene Expression
Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes liver...
Crash Course
DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology
Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.
Bozeman Science
Genotype Expression
Paul Andersen explains how genotypes can be expressed or not based on changes in the environment. He starts with a brief description of the Himalayan rabbit and how melanin production can be disrupted by high temperature. He explains how...
Bozeman Science
Operon
In this video Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase. The...
Bozeman Science
Genetics Preview
Paul Andersen previews the information in the genetics unit. He defines the central dogma of biology and explains how DNA creates an RNA transcript that is used to translate proteins. He differentiates between mitosis and meiosis. He...
Curated Video
Nucleus (chemistry)
In an atom, the small, dense, positively charged structure at its centre, containing the protons and neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Chromosome
A threadlike strand of DNA and associated proteins in the nucleus of eukaryotic cells, and the functional units of inheritance. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
Nature League
Exploring Evolution and Speciation | Compilation
Brit looks back on our sixth month on Nature League, when we explored the theme of evolution and speciation. Get your Nature League pin here!
Nature League
Amazing Advancements in Wildlife Biology | #NowNotThen Tag
This week on Nature League, Brit Garner discusses some positive changes to wildlife biology and conservation research over the last few decades. Get your Critically Endangered Sharks poster here! Only on sale through May 30th.
NASA
Houston We Have a Podcast: DNA Sequencing
Dr. Sarah Wallace talks about her instrumental role in sequencing DNA for the very first time in space. DNA sequencing can be used for things in space from monitoring the crew members' health to identifying microbes, and potentially...
Catalyst University
Aminoacyl tRNA Synthetase Class I Physiology, Biochemistry, and Mechanism
Aminoacyl tRNA Synthetase Class I Physiology, Biochemistry, and Mechanism
Catalyst University
Transcription (Partial; no markings; as done in lab)
Transcription (Partial; no markings; as done in lab)
Catalyst University
Selenophosphate Synthetase: Physiology, Biochemistry, and Mechanism
Selenophosphate Synthetase: Physiology, Biochemistry, and Mechanism