Activities
Excitatory and inhibitory synaptic transmission HL
These are suggested model answers for the activity Neonicotinoids comprehension As model answers they don't cover all the possible options for correct responses, but they provide a very good guide for...
Activities
Synapses - model answers
These are suggested model answers for the activity Stages of synaptic transmission worksheet As model answers they don't cover all the possible options for correct responses, but they provide a very...
Activities
Propagation of action potentials HL (2025)
Action potentials can propagate along axons due to the movement of ions across the membranes. This series of activities explores this by looking at a simulation of the movement of ions through voltage-gated...
Activities
Synapses (2025)
This series of activities explores how synapses work. First, the stages of synaptic transmission are explained, using acetylcholine as an example of a neurotransmitter that can be released at synapses....
Activities
Types of receptors (2025)
This lesson goes into more detail about the different types of receptors that are involved in chemical signalling pathways. The concepts of intracellular and transmembrane receptors are considered first....
Activities
Cell signalling & gene expression (2025)
This lesson explores how intracellular receptors can affect gene expression. In particular, it looks at how the hormones oestradiol, progesterone and testosterone bind to intracellular receptors to affect...
Activities
Cell signalling molecules (2025)
This series of activities will explore the four different categories of cell signalling molecules in animals: hormones, neurotransmitters, cytokines and calcium ions. There are a number of different types...
eBook
A3.1 DNA Barcoding - student reading Free
There have been many sightings of mythical beasts including Bigfoot, Yeti, Sasquatch and Loch Ness Monster.Little evidence exists to illustrate their existence other than folklore. Sometimes, physical...
Activities
Biodiversity of species & DNA
Ecology is the study of the distribution and abundance of organisms, the interaction between organisms, the interaction between organisms and their environment. One of the greatest challenges in Ecology...
Activities
Propagation of action potentials HL - model answers
These are suggested model answers for the activity Action potential simulation worksheet As model answers they don't cover all the possible options for correct responses, but they provide a very good...