A cube of agar jelly is used to investigate the effect of surface area on diffusion.
The cube is 2×2×2 cm2 \times 2 \times 2\text{ cm}2×2×2 cm.
What is the surface area to volume ratio of the cube?
1:31:31:3
3:13:13:1
6:16:16:1
1:61:61:6
Practise OCR GCSE Biology The challenges of size with exam-style questions for Foundation and Higher tier. 24 questions, matched to the OCR GCSE Biology (J247) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.