Some other website have excellent content for learning the core concepts, definitions and so on of IB Biology. See links on the right. I will focus my effort on this site to design problems and questions that offer APPLICATION of IB concepts.
2.1 Cell Theory (3)
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Respiration intro
Respiration is controlled release of energy from organic compounds in cells to form ATP.
•Burning wood is rapid oxidation and uncontrolled;
•In cells energy release is done in incremental steps so that at each step the energy can be used to power another reaction or captured in energy-rich molecules like ATP
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2.2 Prokaryotic Cells (1)
Respiration: Topic 3.7 and chapter 8 for HL
2.3 Eukaryotic Cells (3)
Respiration: Topic 3.7 and chapter 8 for HL
2.4 Membranes (3)
Respiration: Topic 3.7 and chapter 8 for HL
2.5 Cell Division (2)
Respiration: Topic 3.7 and chapter 8 for HL