This introductory course defines biology and its relationship to other sciences. We examine the overarching theories of life from biological research and also explore the fundamental concepts and principles of the study of living organisms and their interaction with the environment.

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In this article, we feature the ten best free online courses in biology we’ve found to date. It doesn’t matter whether you just want a brief overview or you plan to pursue a career in biology, we’ve got you covered.

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Get access to a number of free biology courses offered from some of the United States' most prominent universities. You can get foundational knowledge on molecular and cell biology through introductory classes or learn more advanced concepts in areas like human reproduction, biochemical mechanisms and programmed cell death.

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Find free biology tutorials for beginners that may include projects, practice exercises, quizzes and tests, video lectures, examples, certificate and advanced your biology level. Some courses provide free certificate on course completion.

Embark on a fascinating exploration of life sciences with Alison's extensive collection of free biology courses. From anatomy classes to zoology lessons, our diverse offerings cover the science of living things, including humans, animals, and plants.