CAIE A-Level Biology M.4 Averages, Ratios, Percentages and Experimental Error

Practise selecting averages for biological data, simplifying ratios and calculating percentages, percentage change and experimental percentage error.

[Maximum number: 1]

The table shows the blood pressures in different parts of the circulatory system of a person sitting at rest.

What is the percentage decrease in blood pressure between the arteriole and the arterial end of a capillary?

A

42%

B

58\%

C

142\%

D

240\%

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M.4—Averages, ratios, percentages and experimental error question 1