IB Biology HL
Last updated June 2026
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Posted schedules are tentative and subject to change.
Posted schedules are tentative and subject to change.
Please note due dates for assignments and lab reports! Late work will result in a 10 point reduction per day for up to 3 days after the deadline. Work will not be accepted after 72 hours.
Please note due dates for assignments and lab reports! Late work will result in a 10 point reduction per day for up to 3 days after the deadline. Work will not be accepted after 72 hours.
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Class code: 2bbion
Class code: 2bbion
My e-mail: andreatietjen@hebisd.edu
IB Biology Overview and Guidelines 2026-28.pdfcommand-terms-for-ib-biology (1).pdfHere is a super helpful website from an amazing IB Biology teacher on the west coast: https://www.biologyforlife.com/syllabus.html
TOPIC CARDS_A1 Water & Nucleic Acids 2025.pdfHelpful Links:
A1.1 Water: https://www.youtube.com/watch?v=1e8mbEeaIGU&t=10s
A1.2 Nucleic Acids SL content: https://www.youtube.com/watch?v=knN9csn2wC8&t=3s
A1.2 Nucleic Acids HL content: https://www.youtube.com/watch?v=ZgV57yfPT48&t=370s
A2 TOPIC CARDS_ Origin of Cells, Cell Structure and Viruses 2025.pdfHelpful Links:
Helpful Links:
A2.1 Origin of Cells: https://www.youtube.com/watch?v=QBfI2OTR8E0&t=18s
A2.2 Microscopy: https://www.youtube.com/watch?v=yWyYs-vk8DE
A2.2 Cell Structure: https://www.youtube.com/watch?v=E1rGTop1gg0
A2.2 Organelles & Drawing Cells: https://www.youtube.com/watch?v=E1rGTop1gg0
A2.2 Origin & Evolution of Cells: https://www.youtube.com/watch?v=fdb0f0pR630
A2.3 Viruses: https://www.youtube.com/watch?v=eQ8CIUbscE8&t=688s
Unit B1.1-2: Carbohydrates, Lipids, & Proteins
Unit B1.1-2: Carbohydrates, Lipids, & Proteins
Biochemistry Links:
2.1 Molecules to Metabolism: https://youtu.be/XsIsk1Lvmjc
2.2 Water: https://youtu.be/ARr1eMfi42Q
2.3 Carbs & Lipids: https://youtu.be/ZwA_Q2tpR70
2.4 Proteins: https://youtu.be/lY2ea8KwYD0
2.5 Enzymes: https://youtu.be/9koQPHeeQW4
8.1 Enzyme inhibition (this video is long, but GOOD!): https://youtu.be/BjhJXnDtPP0
Cellular Respiration Video Links:
Cellular Respiration Video Links:
Photosynthesis Video Links:
Photosynthesis Video Links:
DNA Replication Video:
DNA Replication Video:
DNA Packaging & Replication Video:
DNA Packaging & Replication Video:
Malaria and Sickle Cell Anemia article: https://www.nature.com/news/sickle-cell-mystery-solved-1.9342
Malaria and Sickle Cell Anemia article: https://www.nature.com/news/sickle-cell-mystery-solved-1.9342
Finding Huntington's disease with gel electrophoresis: http://www.biology.arizona.edu/molecular_bio/problem_sets/recombinant_dna_technology/07t.html
Finding Huntington's disease with gel electrophoresis: http://www.biology.arizona.edu/molecular_bio/problem_sets/recombinant_dna_technology/07t.html
4.3 Carbon Cycling: https://www.youtube.com/watch?v=6QPI1SpzV9M
4.4 Climate Change: https://www.youtube.com/watch?v=Soo57E22PaQ
5.1 Evidence for Evolution: https://www.youtube.com/watch?v=xu6whVCCZq4
5.2 Natural Selection: https://www.youtube.com/watch?v=JdNson7_Gh8
5.3 Classification of Biodiversity: https://www.youtube.com/watch?v=ZiYNQeUnW2o
5.4 Cladistics: https://www.youtube.com/watch?v=Trl_dHgS6K8
10.3 Gene Pools and Speciation:
Transpiration Virtual Lab
Transpiration Virtual Lab
Helpful Video Links:
Helpful Video Links:
Nerve Impulse: Propagation of an Action Potential along an Axon:
Nerve Impulse: Propagation of an Action Potential along an Axon:
Transmission across a Synapse
Transmission across a Synapse
Muscle Contraction
Muscle Contraction
Helpful Video Links:
Helpful Video Links:
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