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6 marksMembrane Structure and Function

CAPE Biology Unit 1 · 2007 · Paper 2 · Question 5(c)

When strips of potato tissue are immersed in distilled water for two hours, they increase in length and become turgid. Relate this outcome to the exact causes and processes occurring in the cells of the tissue.

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Other parts of this question

  1. 5(a)Describe the structure of the membrane of a typical cell, and identify its component parts and their biochemical nature.[6 marks]
  2. 5(b)(i)Entry of useful minerals, such as potassium[8 marks]
  3. 5(b)(ii)Absorption of large molecules by endocytosis[1 mark]
  4. 5(b)(iii)Entry of non-ionic molecules such as sucrose[1 mark]
  5. 5(b)(iv)Prevention of entry of toxic molecules such as copper or lead[1 mark]

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