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  1. Biology archive | Science | Khan Academy

    The biology archive contains legacy biology content, and is not being updated with new content. For our most up-to-date, mastery-enabled courses, check out Middle School Biology, High School Biology …

  2. Khan Academy | Khan Academy

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  3. Immune system questions (practice) | Khan Academy

    MCAT Course: MCAT > Unit 8 Lesson 10: Immune system Immune system questions MCAT teaching passage: Innate vs adaptive immunity Mini MCAT passage: Neutrophil proliferation and disease Mini …

  4. Genetic mutations questions (practice) | Khan Academy

    MCAT Course: MCAT > Unit 6 Lesson 8: Genetic mutations Genetic mutations questions Collagen mutations result in Osteogenesis imperfecta Mutations that cause Crohn’s Disease Types of …

  5. Evolution and natural selection (practice) | Khan Academy

    High school biology (DEPRECATED) Course: High school biology (DEPRECATED) > Unit 7 Lesson 1: Evolution and natural selection Introduction to evolution and natural selection Ape clarification …

  6. Photosynthesis (practice) | Khan Academy

    Explore photosynthesis with Khan Academy's AP Biology exercises, enhancing understanding of cellular energetics through interactive learning.

  7. Cellular respiration (practice) | Khan Academy

    Test your knowledge of cellular respiration!

  8. Overview of metabolism questions (practice) | Khan Academy

    Questions pertaining to overview of metabolismSo we can give you the right tools, let us know if you're a...

  9. Prokaryotes Questions (practice) | Khan Academy

    Course: MCAT > Unit 7 Lesson 6: Prokaryotes/bacteria Mini MCAT passage: MRSA detection mechanisms MCAT training passage: Virulence factors in outbreak-strain cholera Cell theory …

  10. Hardy-Weinberg (practice) | Evolution | Khan Academy

    Test your knowledge on the Hardy-Weinberg conditions and equation!