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The scientists used units of µg g⁻¹ for the concentration of ammonia in soil - AQA - A-Level Biology - Question 6 - 2018 - Paper 3
Question 6
The scientists used units of µg g⁻¹ for the concentration of ammonia in soil. Suggest why, in this investigation, the scientists used these units. - µg - g⁻¹
Worked Solution & Example Answer:The scientists used units of µg g⁻¹ for the concentration of ammonia in soil - AQA - A-Level Biology - Question 6 - 2018 - Paper 3
Step 1
Units of Measurement
Answer
The use of
- µg (micrograms) allows for measuring very small quantities of ammonia, which is crucial since soil concentrations often involve trace amounts. This unit increases precision in the results.
- g⁻¹ (grams) indicates that the measurement is scaled to the weight of the soil sample, accounting for variations in sample mass, which provides context for the concentration of ammonia.