Loading…
Loading…
GCSE Combined Science · key term
A substance used to add colour and contrast so that cells or their structures are easier to distinguish.
Used by AQA and Edexcel
Specification 4.1.1.2 · Paper 1
Revise: Cell microscopy and estimating sub-cellular sizeMost cells have little colour, so a stain increases contrast between their structures. Iodine can stain onion cells, while methylene blue can stain cheek cells.
Paper 1, Paper 2
A dye or chemical used to make particular structures easier to distinguish in a specimen.
Create a free account to read GCSE Combined Science revision notes for your exam board and track your progress.
Stains often help these structures stand out.