CAIE A-Level Biology AS M 4 Averages Ratios Percentages and Experimental Error Questions

Calculate averages, ratios and percentages, then interpret experimental error to compare biological measurements and evaluate reliability in Cambridge A Level Biology questions.

Exam points

Calculate averages, ratios and percentages and interpret experimental error when comparing biological measurements and evaluating reliability.

[Maximum number: 1]

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

Table for Question CAIE A-Level Biology AS M 4 Averages Ratios Percentages and Experimental Error Questions question 1 — CAIE A-Level Biology AS

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

42%

58\%

142\%

240\%

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CAIE A-Level Biology AS M 4 Averages Ratios Percentages and Experimental Error Questions question 1