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1 markCellular Transport Mechanisms

CSEC Human and Social Biology · May/June 2011 · Paper 2 · Question 3(a)(i)

Perfume sprayed in a bedroom is smelled across the house in the kitchen.

Name the process that causes perfume scent to travel between rooms.

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Other parts of this question

  1. 3(a)(ii)State how this process differs from osmosis.[2 marks]
  2. 3(b)(i)Define active transport.[2 marks]
  3. 3(b)(ii)State ONE location in the human body where active transport takes place.[1 mark]
  4. 3(b)(iii)Identify the cell structure where active transport occurs.[1 mark]
  5. 3(c)(i)Explain how an issue with pulmonary circulation could lead to her breathing difficulties.[3 marks]
  6. 3(c)(ii)Explain how a defect or weakness in the muscular heart walls would affect systemic circulation.[3 marks]
  7. 3(c)(iii)State TWO functions of the lymphatic system.[2 marks]

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