Igcse Model Questions Vol1 2022 Biology Question 3

Practice practical question 3 from the 2022 Igcse Model Questions Vol1 Biology examination. This question covers Nutrition, Blood glucose, Practical skills .

Igcse Model Questions Vol1 2022 Biology Practical
Topics: Nutrition Blood glucose Practical skills
Question 3 IGCSE_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • practical

You are given a set of data from a practical investigation that measured the blood glucose concentration of three volunteers before and after a 30‑minute moderate‑intensity walk. The concentrations were recorded using a calibrated glucometer. The data are shown in the table below. | Volunteer | Glucose before walk (mmol L⁻¹) | Glucose after walk (mmol L⁻¹) | |-----------|-------------------------------|------------------------------| | 1 | 5.4 | 4.9 | | 2 | 6.1 | 5.5 | | 3 | 5.8 | 5.2 | Using this information answer the questions that follow.

Question Parts

( a )
Calculate the mean glucose concentration before the walk and the mean concentration after the walk.
( b )
Determine the percentage change in the mean glucose concentration as a result of the walk. Show your working.
( c )
Identify two possible sources of error that could affect the reliability of the results and suggest one way to minimise each error.

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This is Igcse Model Questions Vol1 2022 Biology Question 3. It is one of the practical questions from the 2022 Igcse Model Questions Vol1 Biology examination.

The question covers Nutrition, Blood glucose, Practical skills .

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