IB Biology HL
Mrs. Tietjen's e-mail: andreatietjen@hebisd.edu
Last updated July 2026
Embedded Files
Posted schedules are tentative and subject to change.
Posted schedules are tentative and subject to change.
Sign up for Remind to receive notifications for my class! Class code: @eukaryotes
Sign up for Remind to receive notifications for my class! Class code: @eukaryotes
Required Materials:
Required Materials:
One three-ring Binder - size 1.5 or 2 inches
One three-ring Binder - size 1.5 or 2 inches
One Composition notebook
Index Cards
Writing utensil
Calculator
Were you absent?
Were you absent?
Be sure your parent/guardian contacts your attendance secretary. Unexcused absences will incur grade penalties!
Check the schedule above to see what you missed and communicate with your teachers immediately upon your return to make a plan for make up work.
Please note due dates for all assignments and assessments! One day absent = one day to make up work.
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.
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
Find Oxford Course Companion DBQ Answers HERE
Unit 1: Water (A1.1) & Carbs, and Lipids (B1.1)
Unit 1: Water (A1.1) & Carbs, and Lipids (B1.1)
Helpful Videos:
Unit 6: Origin/Structure of Cells & Viruses (A2.1-3)
Unit 6: Origin/Structure of Cells & Viruses (A2.1-3)
Helpful Videos:
Helpful Videos:
Unit 2: Proteins (B1.2) and Enzymes (C1.1)
Unit 2: Proteins (B1.2) and Enzymes (C1.1)
Helpful Videos:
Helpful Videos:
Unit 3: Cellular Respiration and Photosynthesis (C1.2-3)
Unit 3: Cellular Respiration and Photosynthesis (C1.2-3)
Helpful Videos:
Helpful Videos:
Unit 4: Nucleic Acid Structure (A1.2) & DNA Replication (D1.1)
Unit 4: Nucleic Acid Structure (A1.2) & DNA Replication (D1.1)
Helpful Videos:
Helpful Videos:
Unit 5: Protein Synthesis, Mutations, & Gene Editing (D1.2-3)
Unit 5: Protein Synthesis, Mutations, & Gene Editing (D1.2-3)
Helpful Videos:
Helpful Videos:
Unit 7: Cell Membrane structure (A2.1-3)
Unit 7: Cell Membrane structure (A2.1-3)
Helpful Videos:
Helpful Videos:
Unit: Cell Division and Gene Expression (D2.1-2)
Unit: Cell Division and Gene Expression (D2.1-2)
Helpful Videos:
Helpful Videos:
Unit: Mutations & Gene Editing (D1.3) and Gene Expression (D2.2)
Unit: Mutations & Gene Editing (D1.3) and Gene Expression (D2.2)
Helpful Links:
Unit: Populations & Communities, Transfers of Energy and Matter (C4.1-2)
Unit: Populations & Communities, Transfers of Energy and Matter (C4.1-2)
Helpful Links:
Unit: Photosynthesis (C1.3)
Unit: Photosynthesis (C1.3)
Helpful Links:
Unit: Chemical and Neural Signalling (C2.1-2)
Unit: Chemical and Neural Signalling (C2.1-2)
Helpful Links:
Unit: Transport (B3.2)
Unit: Transport (B3.2)
Helpful Links:
Unit: Integration of Body Systems (C3.1)
Unit: Integration of Body Systems (C3.1)
Helpful Links:
Unit: Stability and Change (D4.2-3) and Conservation of Biodiversity (A4.2)
Unit: Stability and Change (D4.2-3) and Conservation of Biodiversity (A4.2)
Helpful Links:
Unit 13: Homeostasis (D3.3)
Unit 13: Homeostasis (D3.3)
Helpful Links:
Unit: Defense Against Infectious Disease (C3.2)
Unit: Defense Against Infectious Disease (C3.2)
Helpful Links:
Unit: Reproduction (D3.1)
Unit: Reproduction (D3.1)
Helpful Links:
Link to
Link to
Unit: Stability & Change, Climate Change (D4.2-3) and Conservation of Biodiversity (A4.2)
Unit: Stability & Change, Climate Change (D4.2-3) and Conservation of Biodiversity (A4.2)
Helpful Links:
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