IB Biology HL

Last updated June 2023

Posted schedules are tentative and subject to change. 

Please note due dates for topic cards and lab reports!  Late work will only be accepted within 24 hours of the due date for a maximum grade of a 70!

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Class code:  2bbion

My e-mail:  andreatietjen@hebisd.edu 

For DBQ solutions from the Textbook: https://global.oup.com/education/secondary/curricula/ib-diploma/science/biologyanswers/?region=international 

Overview and Guidelines 2020 Biology Tietjen.pdf
IB Bio Syllabus.pdf

Lab Report Stuff: 

Unit 1:  Biochemistry


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 

Unit 2:  Cell Biology


Cell Links: 

Stem Cell Therapies: 

http://media.hhmi.org/biointeractive/click/Stem_Cell_Therapies/01.html

Organelle Tutorial: 

https://www.youtube.com/watch?v=aczbMlSMr8U 

Cell Membrane & Passive Transport: 

https://www.youtube.com/watch?v=S7CJ7xZOjm0

Unit 3:  Cell Processes


Cellular Respiration Video Links

Electron Transport Chain animation/SONG!: https://www.youtube.com/watch?v=VER6xW_r1vc 


Photosynthesis Video Links

Photosynthesis full process:  https://www.youtube.com/watch?v=KfvYQgT2M-k 

Light Independent Reactions (Calvin Cycle):  https://www.youtube.com/watch?v=vghkb-JuXDA&t=265s 

Factors Affecting the rate of Photosynthesis: https://www.youtube.com/watch?v=J0KxRX3fyoI 

Unit 4:  DNA Structure & Replication



DNA Replication Video: 

DNA Packaging & Replication Video: 

Tyrosinase expression in Siamese cats: https://www.technology.org/2014/07/29/mystery-siamese-cats/ 

Unit 6:  Ecology


4.1 Species, Communities & Ecosystems:  https://youtu.be/_V_gjIE3LGo 

4.2 Energy Flow: https://youtu.be/-RyPZcD_kj0 

4.3 Carbon Cycling:  https://www.youtube.com/watch?v=6QPI1SpzV9M 

4.4 Climate Change:  https://www.youtube.com/watch?v=Soo57E22PaQ

Quadrat Sampling & Chi-squared test: https://www.youtube.com/watch?v=XtpTKdenlcA 

Unit 7: Evolution & Biodiversity

Unit 9: Neuron & Muscles

Helpful Video Links

Nerve Impulse:  Propagation of an Action Potential along an Axon:  

Transmission across a Synapse 

Muscle Contraction 


Unit 11:  Option A - The Brain  & Perception of Stimuli 

Unit 12:  Option A - Animal Behavior & Ethology

Unit 13:  Digestion , the Kidney, & Osmoregulation

Unit 14:  Body's Defense

Unit 15:  Hormones & Reproduction

Link to Menstrual Cycle Tutorial: https://www.abpischools.org.uk/topic/hormones/4/1 

Unit 16: Neural Development and Neuropharmacology