Quelpr
1 markCellular Transport Mechanisms

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

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

Provide one example of osmosis taking place in the human body.

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

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)Complete the statement defining osmosis by filling in the blanks using words from the provided list: (solute, sugar molecules, water molecules, sugar solution).[2 marks]
  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]

More practice: the rest of this paper · more Cellular Transport Mechanisms questions · all CSEC Human and Social Biology past papers