Quelpr
2 marksCellular Transport Mechanisms

CSEC Human and Social Biology · January 2009 · Paper 2 · Question 2(a)(i)

A student sets up an experiment as illustrated in Figure 1 to demonstrate osmosis using a potato cavity containing sugar molecules.

Complete the statement defining osmosis by filling in the blanks using words from the provided list: (solute, sugar molecules, water molecules, sugar solution).

This question uses a figure or table from the paper — you'll see it when you practise.

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Other parts of this question

  1. 2(a)(ii)Provide one example of osmosis taking place in the human body.[1 mark]
  2. 2(b)(i)State whether it is normal for a healthy person to have sugar in their urine.[1 mark]
  3. 2(b)(ii)Describe the process of ultrafiltration in the kidney tubules/nephron.[2 marks]
  4. 2(b)(iii)Name the process by which glucose is selectively reabsorbed into the blood within the kidney tubules.[1 mark]
  5. 2(b)(iv)Name one common disease Mr Douglas may suffer from based on the presence of sugar in his urine.[1 mark]
  6. 2(b)(v)Suggest two measures a doctor might recommend to Mr Douglas to treat or manage this disease.[2 marks]

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