0610/51·BiologyIGCSEEXAM MODE

Paper 5 Practical Test

0610/51 · October/November 2025

Question 20/17 answered · 40 marks total
PRACTICAL

Question 2Height and vital capacity

Name the protein-test reagent, then plot and interpret a printed data set relating a person's height to their lung vital capacity.

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YOUR ANSWERS

2(a)[1]

In people with certain lung diseases the enzyme elastase is more active. Elastase is a protein. State the name of the reagent that is used to test for protein.

2(b)(i)[4]

Plot a line graph on the grid of the data in Table 2.1 (height of the person vs vital capacity).

2(b)(ii)[1]

Describe the relationship shown in your graph between height and vital capacity.

2(b)(iii)[2]

Use your graph to estimate the vital capacity of a person who has a height of 175 cm. Indicate on your graph how you obtained your estimate.

include the unit if the scheme asks for it