Biology

The quantitative heart of the living cell — osmosis you can actually weigh.

Cell biology, measured rather than memorised. Potato cylinders on a balance, a sucrose dilution series, agar cubes racing acid — students measure osmosis as a mass change and read a tissue's water potential straight off a graph.

What's inside

5 topics live today.

Cells, Transport & Membranes

Osmosis you can weigh — water potential, diffusion and surface area.

7 concepts

Sexual Reproduction in Plants

From a dusting of pollen to a growing pollen tube — reproduction, measured.

8 concepts

Ecology & Environment

Sample the field with a quadrat — read a whole population off a handful of squares.

8 concepts

Cell Cycle & Division

Catch mitosis in a root tip — name the stage, then measure how fast cells divide.

8 concepts

Biotechnology

Break a cell open and spool its DNA onto a glass rod — the molecule of inheritance, in your hand.

8 concepts

Curriculum coverage

See what fits your class

Every experiment is tagged to the boards and classes it belongs to. Pick a board to see the spread.

Class 9

1 expt

Class 11

2 expts

Class 12

4 expts

Concept map

The ideas your students will actually hold

Osmosis & water potentialSolute & pressure potentialTurgor & plasmolysisDiffusion & Fick's lawSurface-area-to-volume ratioThe van't Hoff relationSystematic error in measurementThe pollen grain (male gametophyte)Germ pore & intinePollen germinationPollen tube growthRole of sucrose (osmotic balance)Role of boronPercentage germinationDouble fertilisationPopulation densityPopulation frequencyAbundance

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