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1. The diagram shows a cell from a potato.




i) Give two features which may be found in a prokaryotic cell which would not be found in this cell. (2 marks)
ii) Describe how you could confirm that the granules contained starch. (2 marks)
iii) Name one polysaccharide other than…

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4. There is less oxygen at high altitudes than at sea level.

i) People living at high altitudes have more red blood cells than people living at sea level. Explain the advantage of
this to people living at high altitude. (2 marks)

ii) The graph shows O2 dissociation curves for…

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A small population of oystercatchers was established on the islands. Today, the Chatham Island oystercatcher (Torea) is
recognised as a different species. It has a shorter, thicker beak, larger legs and less distinct black and white patterning,
compared to the mainland oystercatcher.
Explain this observation (maximum 20 words) based on…

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Nkeiruka

Explain  how cellulose  gives  cotton  it's  strength . 

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