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- Season 2 Introduction to Biology
- Season 2 The Scientific Method
- Season 2 What Biologists Do
- Season 2 How Life is Organized
- Season 2 Why Did All These Elephants Die? (Intro to Ecology)
- Season 2 How Species Make and Break Friendships (Community Ecology)
- Season 2 How Did We Save The Bald Eagle? (Population Ecology)
- Season 2 What Is Climate Change?
- Season 2 The Effects of Climate Change
- Season 2 How Do We Keep Life's Jenga Tower From Toppling? (Conservation Biology)
- Season 2 What a weirdly long giraffe nerve can teach us about evolution
- Season 2 Microevolution: What's An Allele Got To Do With It?
- Season 2 Natural Selection: Life's Way of Stayin' Alive
- Season 2 Why do we have different skin colors? (Population Genetics)
- Season 2 Where Do Species Come From? (Speciation)
- Season 2 How did life begin? (Evolutionary History)
- Season 2 How We're All Related (Phylogeny)
- Season 2 Humans Develop Butt First (and other insights from the Tree of Life)
- Season 2 Humans Didn't Evolve From Chimps (Human Evolution)
- Season 2 What is Life Made of? (Carbon & Biological Molecules)
- Season 2 A Love Letter to H2O: Water & pH
- Season 2 How We See What We Can't See (Microscopes)
- Season 2 A Tour of the Cell
- Season 2 How Does Stuff Get Into Your Cells? (Cell Membranes)
- Season 2 How Do Cells Communicate? (Cell Communication)
- Season 2 How Do We Get Energy? (Chemical Reactions)
- Season 2 How do cells get their energy? (Electron Transport Chain)
- Season 2 Photosynthesis: The Original Solar Power
- Season 2 Mitosis and the Cell Cycle
- Season 2 Why Are All Humans Unique? Meiosis
- Season 2 Why Your Cat Looks Like That: Genetics
- Season 2 Nature? Nurture? Not so simple: Genetic Traits
- Season 2 Our Instruction Manual for Existing: DNA Structure & Replication
- Season 2 How mRNA helped save lives: DNA Transcription
- Season 2 How RNA gets translated into protein power
- Season 2 How Genes Express Themselves
- Season 2 Is drinking milk a Superpower? Genetic Mutations
- Season 2 We’re full of bacteria!
- Season 2 How Do Vaccines Work?: Viruses & Vaccines
- Season 2 Algorithms Aren’t Just for TikTok: Bioinformatics
- Season 2 Why We Aren’t Just One Big Cell: Multicellular Function
- Season 2 Plants Are Hardcore: Plant Anatomy & Physiology
- Season 2 The Poop Episode: How Animals Turn Resources Into Waste
- Season 2 Why You’re More Than Goo: Animal Infrastructure
- Season 2 How Skin, Snot, and Cells Keep Us Healthy: Animal Defense Systems
- Season 2 What REALLY Happens When You Step on a Lego: Nervous & Endocrine Systems
- Season 2 How Animals Do It: Sexual & Asexual Reproduction
- Season 2 Gender, Sex, & Sexuality: What’s the Difference?
- Season 2 Why This Toad is Bad at Jumping, and Other Mysterious Animal Behavior
- Season 2 The Dr. Sammy Show
Crash Course Biology - Season 2 Episode 20 What is Life Made of? (Carbon & Biological Molecules)
1.50 15 minutes Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the four major classes of biomolecules, how those join up to form macromolecules, and how a team of six atoms forms the vast majority of living matter.
