Complete the following sentence.Â
The size of an organism is ___________ proportional to its surface area to volume ratio.
In an experiment using agar blocks immersed in a diffusion solution, the blocks are made up containing sodium hydroxide and universal indicator solution. Suggest a suitable solution to immerse these blocks in to examine diffusion.
Two organisms are described in the table below.
 | Organism A | Organism B |
Surface Area / cm2 | 18 970 | 79.8 |
Volume / dm3 | 70 | 0.019 |
SA:VOL ratio | Â | Â |
Complete the table by calculating the missing surface area to volume ratios. Do not include units.Â
The table from part c) shows two organisms, A and B. One of these is a mouse, the other is a human. Work out which animal is represented by A. Give a reason for your answer.
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