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Calculate the percentage decrease in glucose concentration between location P and location Q - Edexcel - GCSE Biology - Question 2 - 2016 - Paper 1

Question 2

Calculate the percentage decrease in glucose concentration between location P and location Q. Location P: glucose 170 mg/100 cm³ Location Q: glucose 80 mg/100 cm³

Worked Solution & Example Answer:Calculate the percentage decrease in glucose concentration between location P and location Q - Edexcel - GCSE Biology - Question 2 - 2016 - Paper 1

Step 1

Calculate the Difference in Glucose Concentration

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Answer

First, we calculate the decrease in glucose concentration from location P to location Q:

Decrease = Glucose at P - Glucose at Q = 170 mg/100 cm³ - 80 mg/100 cm³ = 90 mg/100 cm³.

Step 2

Calculate the Percentage Decrease

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Answer

Next, we find the percentage decrease using the formula:

[ \text{Percentage Decrease} = \left( \frac{\text{Difference}}{\text{Original Value}} \right) \times 100 ]

Substituting the values: [ \text{Percentage Decrease} = \left( \frac{90}{170} \right) \times 100 \approx 52.94
]

Thus, the percentage decrease in glucose concentration between location P and location Q is approximately 52.94%.

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