2008
1 a) Diagram below shows the structure of a unicellular organism which lives in a freshwater pond.
Explain the function of X in osmoregulation
2) 2005
Figure shows the organelles involved during the synthesis and secretion of an enzyme in an animal cell
a) Name the organelles labelled P and R
b)i) State the function of organelle S
b) ii) Explain the role of organelle Q in the synthesis of the enzyme
2006
Diagram 1 shows a plant cell as seen under a electron microscope
a) i) On diagram 1 label the structures P, Q, R and S [4m]
ii) State the function of structure R and Q [2m]
b) Explain the role of R to maintain cell turgidity [2m]
b) ii) Explain the role of organelle Q in the synthesis of the enzyme
2006
Diagram 1 shows a plant cell as seen under a electron microscope
a) i) On diagram 1 label the structures P, Q, R and S [4m]
ii) State the function of structure R and Q [2m]
b) Explain the role of R to maintain cell turgidity [2m]
