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DAT prep · Free video course

Survey of the Natural Sciences: Biology

A free, chapter-by-chapter review of DAT Biology, from cells and molecules through genetics, evolution, diversity of life, organ systems and development, pairing top free videos with flashcards and practice quizzes.

10 chapters · 40 videos

Community picks, not instructor-reviewed yet. These videos come from dental schools, faculty and dental educators. Always follow your own school's technique and instructors. Spot a better video or an error? Tell us.

1 Biomolecules and Cell Structure

2 Membranes, Transport, and Cell Division

3 Cellular Respiration and Photosynthesis

4 Molecular Biology: DNA, RNA, and Gene Expression

5 Genetics and Heredity

6 Evolution and Ecology

7 Diversity of Life: Classification, Microbes, Fungi, and Plants

8 Organ Systems I: Nervous, Endocrine, Musculoskeletal, and Integumentary

9 Organ Systems II: Circulatory, Respiratory, Immune, Digestive, and Excretory

10 Reproduction and Developmental Biology

Credits & references

Every video is embedded from YouTube and belongs to its creator. Dental School Map doesn't host, own or edit these videos. Please subscribe to and support the creators below. Creators: if you'd like a video removed or credited differently, contact us.

  1. Amoeba Sisters. “Biomolecules (Updated 2023).” YouTube. youtube.com/watch?v=1Dx7LDwINLU
  2. CrashCourse. “Eukaryopolis - The City of Animal Cells: Crash Course Biology #4.” YouTube. youtube.com/watch?v=cj8dDTHGJBY
  3. Amoeba Sisters. “Prokaryotic vs. Eukaryotic Cells (Updated).” YouTube. youtube.com/watch?v=Pxujitlv8wc
  4. Amoeba Sisters. “Cell Organelles and Structures Review.” YouTube. youtube.com/watch?v=6mgkoqcm6Sg
  5. Amoeba Sisters. “Cell Transport.” YouTube. youtube.com/watch?v=Ptmlvtei8hw
  6. Amoeba Sisters. “Mitosis (UPDATED 2026).” YouTube. youtube.com/watch?v=ShEzlXZPpPM
  7. Amoeba Sisters. “Meiosis (Updated).” YouTube. youtube.com/watch?v=VzDMG7ke69g
  8. Amoeba Sisters. “The Cell Cycle (and cancer) [Updated].” YouTube. youtube.com/watch?v=QVCjdNxJreE
  9. Amoeba Sisters. “Cellular Respiration (UPDATED).” YouTube. youtube.com/watch?v=eJ9Zjc-jdys
  10. Amoeba Sisters. “Photosynthesis (UPDATED).” YouTube. youtube.com/watch?v=CMiPYHNNg28
  11. The Organic Chemistry Tutor. “Cellular Respiration.” YouTube. youtube.com/watch?v=d9hffYCwfEA
  12. CrashCourse. “Photosynthesis: Crash Course Biology #8.” YouTube. youtube.com/watch?v=sQK3Yr4Sc_k
  13. Amoeba Sisters. “DNA Replication (Updated).” YouTube. youtube.com/watch?v=Qqe4thU-os8
  14. Amoeba Sisters. “Protein Synthesis: Transcription and Translation (Updated).” YouTube. youtube.com/watch?v=oefAI2x2CQM
  15. Amoeba Sisters. “Gene Regulation and the Operon.” YouTube. youtube.com/watch?v=h_1QLdtF8d0
  16. Khan Academy. “Leading and lagging strands in DNA replication | MCAT | Khan Academy.” YouTube. youtube.com/watch?v=eM7arWJJ3zk
  17. Amoeba Sisters. “Mega Genetics Review: Mendelian and non-Mendelian Genetics.” YouTube. youtube.com/watch?v=jLmoJPxihjA
  18. Amoeba Sisters. “Incomplete Dominance, Codominance, Polygenic Traits, and Epistasis!.” YouTube. youtube.com/watch?v=YJHGfbW55l0
  19. Amoeba Sisters. “Punnett Squares and Sex-Linked Traits (UPDATED).” YouTube. youtube.com/watch?v=dN9SZHO6Wjg
  20. Amoeba Sisters. “Dihybrid and Two-Trait Crosses.” YouTube. youtube.com/watch?v=qIGXTJLrLf8
  21. Amoeba Sisters. “Natural Selection.” YouTube. youtube.com/watch?v=7VM9YxmULuo
  22. CrashCourse. “Ecosystem Ecology: Links in the Chain - Crash Course Ecology #7.” YouTube. youtube.com/watch?v=v6ubvEJ3KGM
  23. Amoeba Sisters. “Hardy-Weinberg Equilibrium.” YouTube. youtube.com/watch?v=7S4WMwesMts
  24. Amoeba Sisters. “Ecological Relationships.” YouTube. youtube.com/watch?v=rNjPI84sApQ
  25. CrashCourse. “Taxonomy: Life's Filing System - Crash Course Biology #19.” YouTube. youtube.com/watch?v=F38BmgPcZ_I
  26. Amoeba Sisters. “Protists and Fungi.” YouTube. youtube.com/watch?v=zK7Ckmxxqds
  27. CrashCourse. “Old & Odd: Archaea, Bacteria & Protists - CrashCourse Biology #35.” YouTube. youtube.com/watch?v=vAR47-g6tlA
  28. CrashCourse. “The Reproductive Lives of Nonvascular Plants: Alternation of Generations - Crash Course Biology #36.” YouTube. youtube.com/watch?v=iWaX97p6y9U
  29. CrashCourse. “The Nervous System, Part 2 - Action! Potential!: Crash Course Anatomy & Physiology #9.” YouTube. youtube.com/watch?v=OZG8M_ldA1M
  30. CrashCourse. “Endocrine System, Part 1 - Glands & Hormones: Crash Course Anatomy & Physiology #23.” YouTube. youtube.com/watch?v=eWHH9je2zG4
  31. Amoeba Sisters. “Muscle Tissues and Sliding Filament Model.” YouTube. youtube.com/watch?v=dpxalWACO7k
  32. Amoeba Sisters. “Human Body Systems Overview (Updated 2024).” YouTube. youtube.com/watch?v=0JDCViWGn-0
  33. CrashCourse. “Circulatory & Respiratory Systems - CrashCourse Biology #27.” YouTube. youtube.com/watch?v=9fxm85Fy4sQ
  34. Amoeba Sisters. “Immune System.” YouTube. youtube.com/watch?v=fSEFXl2XQpc
  35. Amoeba Sisters. “Excretory System and the Nephron.” YouTube. youtube.com/watch?v=q5qaGHfdmYM
  36. Amoeba Sisters. “Digestive System.” YouTube. youtube.com/watch?v=1UvuBYUbFk0
  37. khanacademymedicine. “Early embryogenesis - Cleavage, blastulation, gastrulation, and neurulation | MCAT | Khan Academy.” YouTube. youtube.com/watch?v=dAOWQC-OBv0
  38. CrashCourse. “Animal Development: We're Just Tubes - Crash Course Biology #16.” YouTube. youtube.com/watch?v=k_9MTZgAhv0
  39. CrashCourse. “Reproductive System, Part 4 - Pregnancy & Development: Crash Course Anatomy & Physiology #43.” YouTube. youtube.com/watch?v=BtsSbZ85yiQ
  40. Amoeba Sisters. “Menstrual Cycle Walkthrough: Phases & Hormonal Regulation.” YouTube. youtube.com/watch?v=h36poEtEbi4