How does the information from mRNA turn into a protein? It all …
How does the information from mRNA turn into a protein? It all comes down to translation, where nucleotides are translated into a chain of amino acids. In this episode of Crash Course Biology, we’ll cover codon-reading ribosomes, tRNA delivery trucks, and scientists who are using what they know about translation to save lives. Chapters: Introduction: Making Proteins DNA & mRNA How Translation Works Peptides & Polypeptides Why Proteins Matter Dr. Katalin Karikó Review & Credits Credits
This is a love letter to water, life’s solvent, and one of …
This is a love letter to water, life’s solvent, and one of the most wonderful molecules around. In this episode of Crash Course Biology, we’ll learn about how water’s polarity and hydrogen bonding help it sustain life on a larger scale. We’ll see how some water-based solutions can be acidic or basic, and examine how our bodies maintain the narrow pH range necessary for life.
Chapters: Hydrogen and Oxygen Solvents Properties of Ice Water’s Properties The pH Scale Review & Credits Credits
From the flu to COVID-19, viruses are a major threat in our …
From the flu to COVID-19, viruses are a major threat in our everyday lives. In today’s episode of Crash Course Biology, we’ll learn why viruses are like genes in a box, and how they invade and spread between cells. We’ll also discover how vaccines and medicines help our bodies fight back. Chapters: Introduction: Discovering Viruses What We Have in Common With Viruses Evolutionary Theories of Viruses Hosts & Infection Retroviruses Vaccines Dr. Quarraisha Abdool Karim & Antivirals Review & Credits Credits
A biologist’s natural habitat is anywhere questions about life are being asked—whether …
A biologist’s natural habitat is anywhere questions about life are being asked—whether the subject is a nematode or a narwhal, a single cell, or a whole ecosystem. In this episode of Crash Course Biology, we’re flipping the microscope around to show how biologists’ work goes down. Along the way, we’ll learn why zebrafish and fruit flies are some of biology’s next top models.
Chapters: Studying Life Your Local Biologist Biologists At Work Real Life Biologists Model Organisms Review & Credits Credits
Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing …
Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing like the climate change we’re experiencing now. In this episode of Crash Course Biology, we’ll talk about the greenhouse effect, learn why our climate is like a tangled pair of headphones, and discover that we’ve understood the science behind climate change for much longer than you might think.
Chapters: Introduction to Climate Change The Greenhouse Effect Measuring the Greenhouse Effect Carbon Sinks Environmental Justice Review & Credits Credits
Even though it might seem like our bodies are on autopilot, there …
Even though it might seem like our bodies are on autopilot, there is a whole lot happening inside us to keep things moving. In this episode of Crash Course Biology, we’ll learn that our cells are in constant communication, reminding each other—and themselves—to perform important functions like breathing, walking, or even sleeping.
Chapters: Behind the Scenes Cell Communication How Cells Respond to Signals Platypus Reproduction Types of Signaling Review & Credits Credits
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