CAPE Biology Unit 1 · 2005 · Paper 2 · Question 4(b)
Red blood cells were placed in distilled water (slide A) and molar salt solution (slide B). After 20 minutes, cells in A burst, and cells in B were small with wrinkled membranes.
Discuss the processes involved and give reasons for these results.
The mark scheme is shown once you've answered.
Practise this question