Biology
High School (9–10)
General
Cell Biology › Cell Structure and OrganellesCell Biology › Transport Across the Cell MembraneChapter 1The Fundamental Unit of Life
You are made of cells, and so is a tree and a mushroom. What is inside one cell? How does it eat, breathe and keep its shape? In this chapter we look at the cell, its parts and the jobs of the parts. Then we see how water and food move in and out. We use Python to measure cells and to watch particles spread.
Part of Biology · High School (9–10) (chapter 1)
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Cells and Their Parts
You cannot see a cell with your eyes alone, but every living thing is made of them. In this course we learn who found the cell, what is inside it, and why cells are so small.
How Substances Move In and Out of Cells
A raisin swells in water. A lettuce becomes crisp in a bowl of water. A drop of ink spreads without stirring. In this course we learn the two ideas behind all of this, diffusion and osmosis, and we test them with a potato.