Activities
Virus extension questions - model answers
These are suggested model answers for the activity Extension questions about mutations and convergent evolution on page Virus origins & evolution (2025) As model answers they don't cover all the possible...
Activities
Virus DBQ - model answers
These are suggested model answers for the activity Virus data based questions on the page Virus origins & evolution (2025) As model answers they don't cover all the possible options for correct responses,...
Assessment - introduction
IA uploads to the IBIS platform - simple guide
As teachers only enter marks and upload IAs once a year on the IB's platform IBIS it's usually a bit of a struggle to get to the right place. The upload procedure is easy and relatively fast once you...
eBook
A2.3 Viruses - student friendly syllabus
Blue text shows extra clarification or guidance. Guiding questions Viruses have some of the smallest genomes known. Most of the genome provides genes to replicate the protein coat of the viruses's structure....
eBook
A2.3 Virus origins - student reading Free
Although biologists have an understanding about evolution of present-day viruses, much less is known about the origin of the first viruses. When exploring evolutionary history scientists usually look...
Activities
Cell signalling & gene expression - model answers
These are suggested model answers for the activity The role of oestradiol and progesterone on gene expression As model answers they don't cover all the possible options for correct responses, but they...
Activities
Types of receptors - model answers
These are suggested model answers for the activity Receptors involved in cell signalling worksheet As model answers they don't cover all the possible options for correct responses, but they provide...
Activities
Cell signalling molecules - model answers
These are suggested model answers for the activity Cell signalling - guess who? As model answers they don't cover all the possible options for correct responses, but they provide a very good guide for...
eBook
C2.1 Chemical signalling - student friendly summary
This is a 'student friendly' summary list of the IB DP Biology Guide for Topic C2.1 Chemical signalling Interaction and interdependence — Cells AHL: 4 hours Guiding questions Cells communicate to...
Activities
Cell division & cytokinesis (2025)
In this activity students connect to prior knowledge about cell division and consider the importance of generating new chromosomes before cell divide. This illustrates the difference between nuclear division...