All Episodes of Crash Course Biology
Browse all episodes of Crash Course Biology
Season 1
7.5/107 votesThat's Why Carbon Is A Tramp
Season 1 Episode 1 - Aired 1/30/2012
And thus begins the most revolutionary biology course in history. Come and learn about covalent, ionic, and hydrogen bonds. What about electron orbitals, the octet rule, and what does it all have to do with a mad man named Gilbert Lewis? It's all contained within.
Director: Unknown
Writer: Unknown
- N/A/100 votes
DNA, Hot Pockets, & The Longest Word Ever
Season 1 Episode 11 - Aired 4/9/2012
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.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Evolutionary Development: Chicken Teeth
Season 1 Episode 17 - Aired 5/21/2012
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 evolved.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Population Genetics: When Darwin Met Mendel
Season 1 Episode 18 - Aired 5/28/2012
Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Evolution: It's a Thing
Season 1 Episode 20 - Aired 6/11/2012
Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.
Director: Unknown
Writer: Unknown
- N/A/100 votes
- N/A/100 votes
Simple Animals: Sponges, Jellies, & Octopuses
Season 1 Episode 22 - Aired 6/25/2012
Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex molluscs, octopuses and squid. We differentiate them by the number of tissue layers they have, and by the complexity of those layers.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Chordates
Season 1 Episode 24 - Aired 7/9/2012
Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal sarcopterygian osteichthyen gnathostomal vertebrate cranial chordate.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Circulatory & Respiratory Systems
Season 1 Episode 27 - Aired 7/30/2012
Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and help make it possible for our bodies to function.
Director: Unknown
Writer: Unknown
- N/A/100 votes
The Skeletal System: It's ALIVE!
Season 1 Episode 30 - Aired 8/20/2012
Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts, is involved in many other vital processes that help our bodies to function properly.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Old & Odd: Archaea, Bacteria & Protists
Season 1 Episode 35 - Aired 9/24/2012
Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most abundant organisms on Earth, and are our oldest, oddest relatives.
Director: Unknown
Writer: Unknown
- N/A/100 votes
The Sex Lives of Nonvascular Plants: Alternation of Generations
Season 1 Episode 36 - Aired 10/1/2012
Hank introduces us to nonvascular plants - liverworts, hornworts & mosses - which have bizarre features, kooky habits, and strange sex lives. Nonvascular plants inherited their reproductive cycle from algae, but have perfected it to the point where it is now used by all plants in one way or another, and has even left traces in our own reproductive systems.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Vascular Plants = Winning!
Season 1 Episode 37 - Aired 10/8/2012
Hank introduces us to one of the most diverse and important families in the tree of life - the vascular plants. These plants have found tremendous success and the their secret is also their defining trait: conductive tissues that can take food and water from one part of a plant to another part. Though it sounds simple, the ability to move nutrients and water from one part of an organism to another was a evolutionary breakthrough for vascular plants, allowing them to grow exponentially larger, store food for lean times, and develop features that allowed them to spread farther and faster. Plants dominated the earth long before animals even showed up, and even today hold the world records for the largest, most massive, and oldest organisms on the planet.
Director: Unknown
Writer: Unknown
- N/A/100 votes
The Plants & The Bees: Plant Reproduction
Season 1 Episode 38 - Aired 10/15/2012
Hank gets into the dirty details about vascular plant reproduction: they use the basic alternation of generations developed by nonvascular plants 470 million years ago, but they've tricked it out so that it works a whole lot differently compared to the way it did back in the Ordovician swamps where it got its start. Here's how the vascular plants (ferns, gymnosperms and angiosperms) do it.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Fungi: Death Becomes Them
Season 1 Episode 39 - Aired 10/22/2012
Death is what fungi are all about. By feasting on the deceased remains of almost all organisms on the planet, converting the organic matter back into soil from which new life will spring, they perform perhaps the most vital function in the global food web. Fungi, which thrive on death, make all life possible.
Director: Unknown
Writer: Unknown
- N/A/100 votes
Ecology - Rules for Living on Earth
Season 1 Episode 40 - Aired 10/29/2012
Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks and acts the way it does. The world is crammed with things, both animate and not, that have been interacting with each other all the time, every day, since life on this planet began, and these interactions depend mostly on just two things... Learn what they are as Crash Course Biology takes its final voyage outside the body and into the entire world.
Director: Unknown
Writer: Unknown