On its own, a huge DNA sequence is a meaningless pile of …
On its own, a huge DNA sequence is a meaningless pile of data — so, how do biologists figure out what it means? They turn to the power of bioinformatics! In this episode, we’ll learn what bioinformatics is, how it works, and how scientists have used it to better understand everything from evolution to a viral epidemic. Chapters: Introduction: Pizza Data Bioinformatics Algorithms The Human Genetic Code The BRCA1 Gene Transcriptomes The Zika Virus Bioinformatics & Programming Review & Credits Credits
Everywhere you look on Earth, you’ll find wonderful and diverse living things, …
Everywhere you look on Earth, you’ll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. And incredibly, everything alive today, and everything that’s ever lived, is related. In this episode of Crash Course Biology, we reveal how the evolutionary relationships between living things define their place on a single, great Tree of Life, and we learn what that tree can tell us about our own place among the planet’s biodiversity.
Chapters: Ravens & Rhinos The Tree of Life Prokaryotes Eukaryotes Plants Fungi Animals Review & Credits Credits
Hank talks about the molecules that make up every living thing - …
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.
You might think a self regulating factory sounds pretty unbelievable, but that’s …
You might think a self regulating factory sounds pretty unbelievable, but that’s pretty much exactly how our bodies work! Our bodies are full of regulatory mechanisms that keep all the organic molecules we need to live in balance. In this episode of Crash Course Organic Chemistry, we’ll look at the building blocks that form these biological polymers, including carbohydrates, proteins, and DNA!
This 14-minute video lesson provides an overview of B cells (B lymphocytes) …
This 14-minute video lesson provides an overview of B cells (B lymphocytes) and how they are activated and produce antibodies. [Biology playlist: Lesson 53 of 71].
You’ve probably heard of Charles Darwin, but before we get to him, …
You’ve probably heard of Charles Darwin, but before we get to him, you really need to understand how different people, throughout the seventeenth and eighteenth centuries, tried to answer the same question: “what is life?”
This 9-minute video lesson looks at how CAM Plants are able to …
This 9-minute video lesson looks at how CAM Plants are able to fix carbon at night so they don't have to keep their stomata open during the day. [Biology playlist: Lesson 34 of 71].
This Biology Courses website is a nationally funded project that is part …
This Biology Courses website is a nationally funded project that is part of the UK Open Educational Resource Programme (Phase 3, 2011 – 2012) run by the JISC / HEA. Our project is called HALS OER – Health and Life Science Open Educational Resources and everything you see here is shared around the globe, openly and freely available to use.
This 10-minute video lesson discusses how cytotoxic T-Cells get activated by MHC-I/antigen …
This 10-minute video lesson discusses how cytotoxic T-Cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells. [Biology playlist: Lesson 56 of 71].
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