The diagrams show five different microscopic structures.
The structures are not drawn to the same scale.
Which of these structures is the smallest?
A. 4
B. 5
C. 1
D. 3
E. 2
The correct answer is E.
To answer this question, there are 2 steps :
-
First, we have to determine the actual size of each structure : they are all magnified by a certain number of times, which means that the actual sizes are divided by that number.
-
Then, we have to put each structure to the same scale : we will put all of them into micrometers (µm)
Based on these elements, we can determine that row 2 (bacteria) is the smallest.
The trick here is to be able to navigate through all the different units with ease :
Therefore :
- 1 cm = 10 000 µm
- 1 mm = 1 000 µm.
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