Biology

Get notes, worksheets, labs, and worked problems in general biology, AP biology, genetic, microbiology, and more.

Mutualism Examples and Definition — Learn about mutualism in biology. Get the definition, mutualism examples, and learn about the different types.

Mutualism Definition and Examples in Biology Recently updated !

This entry was posted on May 22, 2022 by Anne Helmenstine (updated on May 22, 2022)

Biotic and Abiotic Factors — Learn about biotic and abiotic factors in ecology. Get the definitions and examples of the terms and learn about limiting factors.

Biotic and Abiotic Factors in Ecology

This entry was posted on April 26, 2022 by Anne Helmenstine (updated on May 2, 2022)

10 Facts About Cells — Get interesting and fun facts about cells. Learn about the types of cells, the history of their discovery, and more.

10 Facts About Cells

This entry was posted on April 13, 2022 by Anne Helmenstine (updated on April 21, 2022)

Facts About Viruses — Get facts about viruses. Learn their key characteristics, how big they are, how they reproduce, and some diseases they cause.

Facts About Viruses

This entry was posted on March 26, 2022 by Anne Helmenstine (updated on April 5, 2022)

Active and Passive Transport — Learn the difference between active and passive transport and get examples of each type of transport process in the cell.

Active and Passive Transport – Overview and Differences

This entry was posted on March 19, 2022 by Anne Helmenstine (updated on March 28, 2022)

Prokaryotic vs Eukaryotic Cells — Learn the differences between prokaryotic vs eukaryotic cells. Also, see the similarities between prokaryotes and eukaryotes.

Prokaryotic vs Eukaryotic Cells – Similarities and Differences

This entry was posted on March 15, 2022 by Anne Helmenstine (updated on March 21, 2022)

Biology Notes, Worksheets, and Quizzes — Get free biology notes, worksheets, quizzes, and slides that you can download and print in PDF, PNG, and Google Classroom formats.

Biology Worksheets, Notes, and Quizzes (PDF and PNG)

This entry was posted on March 14, 2022 by Anne Helmenstine (updated on May 9, 2022)

Autotroph vs Heterotroph — Learn the difference between an autotroph and a heterotroph or producer and consumer. Get examples of organisms in each group.

Autotroph vs Heterotroph

This entry was posted on February 24, 2022 by Anne Helmenstine (updated on February 28, 2022)

Kingdoms of Life in Biology — Learn about the kingdoms of life in biology. See the taxonomy for five and six kingdoms and get examples of organisms and characteristics.

Kingdoms of Life in Biology

This entry was posted on February 19, 2022 by Anne Helmenstine (updated on February 28, 2022)