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  • 9 May 22

    Good luck

    Wednesday the 11th May students in the northern hemisphere will revise for the last time, and sit down in an exam hall to answer the questions in this years IBDP Biology Exams. Whether HL or SL, aiming for grade 7 or grade 4 we hope you have...

  • 9 May 22

    Planning extended response answers for success.

    Probably the most daunting questions IB Biology students have to answer are the extended response questions. They are not essays, but they do require a little structure. This post shares helpful ideas about how to approach these questions....

  • 20 Apr 22

    Success with multiple choice questions

    Multiple choice questions are more difficult than they look in IB exams because the examiners usually include tempting distracters amongst the choices of answers. Students who are alert to the possibility of partly correct answers will achieve...

Hot pages

  • 06 Human physiology

    Digestion & absorption 6.1

    The human digestive system, its parts and functions are in this topic. This includes digestive enzymes, their optimum conditions, substrates and products, as well as detailed structure of villi and microvilli.

  • 06 Human physiology

    Blood system 6.2

    Revise and learn how to sketch the diagram of a heart, label heart chambers and blood vessels, distinguish between arteries, veins and capillaries, describe the cardiac cycle, the control of the heart rate and the causes and consequences of occlusion. 

  • 02 Molecular biology

    Water 2.2

    In this section you will learn everything about the water, about its composition, polarity, hydrogen bonds and what makes water so unique in terms of its physical properties.

  • 06 Human physiology

    Hormones and reproduction 6.6

    Learn about homeostasis, thermoregulation, control of blood glucose, diabetes, leptin, melatonin, male and female reproductive systems, the SRY gene, secondary sexual characteristics and the menstrual cycle.

  • 06 Human physiology

    Neurones and synapses 6.5

    This topic covers neurons and synapses. Get to grips with the structure of a neuron, the propagation of action potentials along a neuron and the transmission of electrical impulses across a synapse. There is also a specific look at cholinergic synapses.