A cell is 25 µm wide. How many of these cells, side by side in a line, fit across 3 mm?
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A cell is wide. How many of these cells, side by side in a line, fit across ?
Need a reminder? The key ideaShow
1 mm = 1000 µm. Size in the picture = actual size × magnification, so actual size = size in the picture ÷ magnification.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Same units. .
Step 2. Divide. .
Answer: cells.
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