Crash Course Biology Preview

Summary

The cell is the basic unit of life, and our understanding of it has advanced as science, and the tools available to scientists, has ... Cells need energy to power the chemical reactions that keep their microscopic cities running, and most of that energy comes from ... Here on Earth, life is dizzyingly diverse—but it's also surprisingly organized. A sense of order structures life and its processes, ... Hank takes us through the bowels of the human digestive system and explains why it's all about surface area. Table of Contents 1) ... Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three ... What's the life of a cell ? In this episode of Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are ... Everywhere you look on Earth, you'll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. Hank teaches us why water is one of the most fascinating and important substances in the universe. Review: Re-watch = 00:00 ... Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies. Science offers a way of discovering and understanding the world around us, driven by questions and tested with evidence. And it's ... A biologist's natural habitat is anywhere questions about life are being asked—whether the subject is a nematode or a narwhal, ...