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A fire breathing monster in the immune system? Free
A new therapy which strengthens the power of a patient’s immune system to attack tumours is curing people of cancer. It is an exciting and ingenious technique which links many areas of Biology which IB...
ATL in Biology
Photosynthesis Experiments Free
This activity introduces a simple method of measuring the rate of photosynthesis and leads students to design their own investigation of a factor which affects it. A second activity illustrates how the...
ATL in Biology
Population growth curves Free
This activity shows how populations can grow in limited environments. While it is possible to carry out wet labs or field work to see the growth of populations with this model students can quickly understand...
ATL in Biology
Answers to Answers to IB Style Questions on alveoli:
Answers to IB Style Questions on Ventilation system & alveoli: Multi choice answers in bold One mark is awarded for a correct definition – (1 mark)The diffusion of oxygen and carbon dioxide through the...
ATL in Biology
Option C - Ecology revision activities
This page contains some suggestions for revision. To see the big picture, an overview of the whole option, the A3 revision sheets on this page will help. There are two revision sheets, one for the SL...
ATL in Biology
Option C HL Ecology A3 revision - model answers
This page shows suggestions of model answers for the A3 revision sheet: A3 revision worksheet for Option C Ecology HL topics Of course this sheet will reassure students who are revisingbut the process...
ATL in Biology
Option C SL Ecology A3 revision - model answers
This page shows suggestions of model answers for the A3 revision sheet: A3 revision worksheet for Option C Ecology SL topics Of course this sheet will reassure students who are revisingbut the process...
ATL in Biology
Antibody & vaccination - planning sheet 11.1
Planning sheet for 11.1 Antibody production and vaccination Understanding(s): Antibody production Monoclonal antibodies Essential Question(s) TOK / Nature of Science / IM Skills & applications Vaccination...
ATL in Biology
Phytochrome Qn model answer
This diagram summarises the role of phytochrome in the initiation of flowering. Explain how day length can stimulate the production of flowers. ..................................................................................................................................................
ATL in Biology
Synapses and nervous system plasticity
A short video introduces the concept that multiple synapses are formed by developing neurons in the fetal brain. Those synapses that are not used do not persist and neural pruning removes unused synapses,...