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4 marksMembrane Structure and Function

CAPE Biology Unit 1 · 2011 · Paper 2 · Question 1(c)(i)

You are provided with a large uncooked potato and six solutions of different concentrations. One of the solutions has the same water potential as the potato.

Outline a simple investigation to determine which solution has the same water potential as the potato.

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Other parts of this question

  1. 1(a)(i)Identify the structures labelled A, B and C in Figure 1.[3 marks]
  2. 1(a)(ii)The structure labelled A in Figure 1 is also present in some eukaryotic cells. State how the structure of A in prokaryotic cells differs when present in…[1 mark]
  3. 1(a)(iii)There are two types of eukaryotic cells, plant and animal. In which of these is the structure labelled A in Figure 1, NOT found?[1 mark]
  4. 1(a)(iv)Name the structure in a eukaryotic cell that serves the same function as the mesosomes of a prokaryotic cell.[1 mark]
  5. 1(a)(v)Both eukaryotic cells and prokaryotic cells contain DNA. State ONE way in which the DNA in eukaryotic cells differs from the DNA in prokaryotic cells.[1 mark]
  6. 1(b)Complete the table by writing the correct answers in the spaces provided.[3 marks]
  7. 1(c)(ii)Describe the expected observation in the solution with the same water potential as the potato.[1 mark]

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