Biology

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

Gram Positive vs Gram Negative Bacteria — Learn about the difference between Gram positive and Gram negative bacteria, including why you need to be able to tell them apart.

Gram Positive vs Gram Negative Bacteria Recently updated !

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

Symbiosis Definition and Examples — Get the symbiosis definition and examples. Learn about the different types of symbiosis in ecology and biology.

Symbiosis Definition and Examples Recently updated !

This entry was posted on September 25, 2022 by Anne Helmenstine (updated on September 29, 2022)

Do We Use 100% of Our Brain or Only 10% — Learn what percentage of our brain we use and where the 10% myth got started. See why 100% isn't necessarily the right answer, either.

What Percentage of Our Brain Do We Use? 100%? 10%? Recently updated !

This entry was posted on September 13, 2022 by Anne Helmenstine (updated on September 29, 2022)

Parasitism Definition and Examples — Learn about parasitism in ecology. Get the definition and see examples of parasites and their host species.

Parasitism Definition and Examples Recently updated !

This entry was posted on August 30, 2022 by Anne Helmenstine (updated on September 25, 2022)

Venom vs Poison — Learn the difference between venom and poison. Get examples of venomous and poisonous organisms and their toxins.

Venom vs Poison – Difference Between Venomous and Poisonous

This entry was posted on July 26, 2022 by Anne Helmenstine (updated on August 3, 2022)

Angiosperm vs Gymnosperm — Explore the similarities and differences between angiosperms and gymnosperms. Get examples of each type of seed-bearing plant.

Angiosperm vs Gymnosperm

This entry was posted on July 22, 2022 by Anne Helmenstine (updated on July 28, 2022)

Monocot vs Dicot — Learn the difference between monocots and dicots. Get examples and see how to tell a monocot and dicot apart.

Monocot vs Dicot – How to Tell the Difference

This entry was posted on July 10, 2022 by Anne Helmenstine (updated on July 18, 2022)

5 Groups of Vertebrates — Learn about the 5 groups of vertebrates. Get examples of each group and learn about their characteristics.

5 Groups of Vertebrates – Characteristics and Examples

This entry was posted on June 29, 2022 by Anne Helmenstine (updated on July 1, 2022)

Carnivorous Plants — Learn about carnivorous plants, including the Venus fly trap, pitcher plant, and honeydew. Find out how the plants catch and eat insects.

Carnivorous Plants

This entry was posted on June 26, 2022 by Anne Helmenstine (updated on July 9, 2022)