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Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

Mar 23, 2020 · We are releasing updated content for AP® Biology. This content includes new exercises, quizzes, and unit tests that are fully aligned with the AP® Biology Course Description.

Practice Mechanisms of transport: tonicity and osmoregulation Get 3 of 4 questions to level up!

For the past two years, we’ve been working hard to build an AP Biology course full of helpful videos and articles, along with rigorous and engaging practice. This month, we’re publishing a new video and …

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References Current Opinion in Plant Biology Proceedings of the National Academy of Sciences of the USA

The new course will add more videos to our existing AP® Biology content. It will also include new exercises, quizzes, and unit tests that are fully aligned with the AP® Biology Course Description.

Plasma membranes AP.BIO: ENE‑2 (EU), ENE‑2.A (LO), ENE‑2.A.1 (EK), ENE‑2.A.2 (EK), ENE‑2.B (LO), ENE‑2.B.1 (EK) Google Classroom Microsoft Teams