THE LIBRARY
Every experiment. Read it, or run it.
Full protocols with apparatus lists, safety notes, and the results you should expect — plus a live simulator on the same page, so reading and doing are one trip, not two.
SubjectBiology
SyllabusA-Level
2 of 19 experiments
Biology~55 min
Iodine clock: estimating hydrogen peroxide concentration by serial dilution
Time an iodine clock across a serial dilution, then read an unknown concentration off your own curve.
A-Level
Biology~60 min
Microscopy and stereology: a plant stem cross-section (slide J1)
Count vascular bundles in a sample sector and scale up to a whole-section density.
A-Level