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5 Figure 9 shows a nephron from a kidney - Edexcel - GCSE Biology - Question 5 - 2023 - Paper 2

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5 Figure 9 shows a nephron from a kidney. glomerulus blood blood Bowman's capsule first coiled tubule Figure 9 a) The pressure of the liquid in the Bowma... show full transcript

Worked Solution & Example Answer:5 Figure 9 shows a nephron from a kidney - Edexcel - GCSE Biology - Question 5 - 2023 - Paper 2

Step 1

Calculate the pressure in the glomerulus.

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Answer

To find the pressure in the glomerulus, we need to multiply the pressure in the Bowman’s capsule by 5.6:

1.3 kPa (pressure in Bowman's capsule) * 5.6 = 7.28 kPa

Rounding this to one decimal place gives us 7.3 kPa.

Step 2

Which row of the table shows the parts of the blood that move into the Bowman’s capsule?

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Answer

From the options provided, the answer is:

A
blood cells: ✗
urea: ✓
water: ✓

Because blood cells do not enter the Bowman’s capsule, whereas urea and water do.

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