Crash Course Biology - Biology

Crash Course Biology ()

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In 50 episodes, we’re going to explore biology—the science of life. Dr. Samuel Ramsey will guide you through life’s vast interconnectedness, telling lesser-known stories of biologists along the way. We’ll discover how evolution, genetics, ecology, and cell and organismal biology deepen our knowledge of every living thing: including ourselves.

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Introduction to Biology

The Scientific Method

What Biologists Do

How Life is Organized

Why Did All These Elephants Die? (Intro to Ecology)

How Species Make and Break Friendships (Community Ecology)

How Did We Save The Bald Eagle? (Population Ecology)

What Is Climate Change?

The Effects of Climate Change

How Do We Keep Life's Jenga Tower From Toppling? (Conservation Biology)

What a weirdly long giraffe nerve can teach us about evolution

Microevolution: What's An Allele Got To Do With It?

Natural Selection: Life's Way of Stayin' Alive

Why do we have different skin colors? (Population Genetics)

Where Do Species Come From? (Speciation)

How did life begin? (Evolutionary History)

How We're All Related (Phylogeny)

Humans Develop Butt First (and other insights from the Tree of Life)

Humans Didn't Evolve From Chimps (Human Evolution)

What is Life Made of? (Carbon & Biological Molecules)

A Love Letter to H2O: Water & pH

How We See What We Can't See (Microscopes)

A Tour of the Cell

How Does Stuff Get Into Your Cells? (Cell Membranes)

How Do Cells Communicate? (Cell Communication)

How Do We Get Energy? (Chemical Reactions)

How do cells get their energy? (Electron Transport Chain)

Photosynthesis: The Original Solar Power

Mitosis and the Cell Cycle

Why Are All Humans Unique? Meiosis

Why Your Cat Looks Like That: Genetics

Nature? Nurture? Not so simple: Genetic Traits

Our Instruction Manual for Existing: DNA Structure & Replication

How mRNA helped save lives: DNA Transcription

How RNA gets translated into protein power

How Genes Express Themselves

Is drinking milk a Superpower? Genetic Mutations

We’re full of bacteria!

How Do Vaccines Work?: Viruses & Vaccines

Algorithms Aren’t Just for TikTok: Bioinformatics

Why We Aren’t Just One Big Cell: Multicellular Function

Plants Are Hardcore: Plant Anatomy & Physiology

The Poop Episode: How Animals Turn Resources Into Waste

Why You’re More Than Goo: Animal Infrastructure

How Skin, Snot, and Cells Keep Us Healthy: Animal Defense Systems

What REALLY Happens When You Step on a Lego: Nervous & Endocrine Systems

How Animals Do It: Sexual & Asexual Reproduction

Gender, Sex, & Sexuality: What’s the Difference?

Why This Toad is Bad at Jumping, and Other Mysterious Animal Behavior

The Dr. Sammy Show