Explore common biological topics by studying the smallest biological units: molecules and cells. You can earn a free certificate of completion in this online Biology course, or it to earn credit in leading college programs.

In our Biology course, you will learn to:

  • characterize the biological principles common to all organisms;
  • explain how information is stored, copied, transferred, and expressed in biological systems; and
  • apply the scientific method to solve problems in real-world settings.

BIO101: Introduction to Molecular and Cellular Biology

Explore fundamental concepts of molecular biology, including the four essential macromolecules for life (proteins, carbohydrates, lipids, and nucleic acids) and other essential compounds. This course covers the cell membrane and transport, cell division, gene expression, and cellular metabolism.