Courses
Teacher-curated, self-paced courses. Looking for a guided sequence through a full topic? See Learning Paths.
4 courses
Cell Theory, Prokaryotes and Eukaryotes
Biology · High School (11–12) · Cell Structure and Organelles
FreeCh 7 · 1/3
What a cell is, the cell theory and who built it, an overview of cells and their sizes and shapes, and the prokaryotic cell with its envelope, mesosomes, ribosomes and inclusion bodies.
3Lessons10Problems2Python Labs1Question Set1Mock Test
The Cell Membrane, Wall and Endomembrane System
Biology · High School (11–12) · Cell Structure and Organelles, Transport Across the Cell Membrane
FreeCh 7 · 2/3
The fluid mosaic model of the cell membrane and how things cross it, the plant cell wall, and the endomembrane system: endoplasmic reticulum, Golgi apparatus, lysosomes and vacuoles.
3Lessons10Problems2Python Labs1Question Set1Mock Test
Mitochondria, Plastids and the Nucleus
Biology · High School (11–12) · Cell Structure and Organelles
FreeCh 7 · 3/3
The organelles outside the endomembrane system: mitochondria, plastids, ribosomes, the cytoskeleton, cilia and flagella, centrosome and centrioles, microbodies, and the nucleus with its chromosomes.
3Lessons10Problems2Python Labs1Question Set1Mock Test
Cells and Their Parts
Biology · High School (9–10), General · Cell Structure and Organelles
FreeCh 1 · 1/2
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.
3Lessons9Problems2Python Labs1Question Set1Mock Test