eBook
C4.2 Transfers of energy - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic C4.2 Transfers of energy. A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes include...
eBook
D2.2 Gene expression - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic D2.2 Gene expression (HL only). A tool for actively reviewing knowledge and understanding - short and sweet. There is no SL and HL in this...
eBook
C2.1 Chemical signalling - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic C2.1 Chemical signalling. A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes include...
eBook
C4.1 Populations - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic C4.1 Populations and communities. A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes...
eBook
B4.2 Ecological niches - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic B4.2 Ecological niches A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes include...
Activities
Membrane proteins - video markscheme
The video begins with a rolling macrophage sticking to endothelial cells lining the blood vessel. Both cells use “cell-adhesion molecules” (CAMs) which are described as “Velcro”. What is the function...
ATL in Biology
C2.2 Student access page - model
Topic C2.2 Neural signalling is all about the brain, its neurons and the synapses between them. 5 Essential points about topic C2.2 Neural signalling Lesson activity pages This series of activities...
ATL in Biology
Membrane protein question answers
What is the function of cholesterol in the membrane Cholesterol affects the fluidity of the phospholipid bilayer, it is found amongst the lipid tails. …………………………………………………………………………………………………………………………………………….....
Activities
Further Membrane Structure (2025)
In this activity students see for themselves the wonderful interactions which occur inside cells and between cells using a short animation from Harvard university. The roles of some membrane proteins...
Assessment - introduction
B4.2 Ecological niches - topic test
This test contains the following questions: B4.2 Ecological niches topic test - IB style questions There is a set of model answers / mark scheme here: B4.2 Ecological niches - model answers Teachers...