O-LevelBiologyCell Biology5090/22 · Oct/Nov 2019 · Q610 Marks
The diagrams show two types of cell specialised to carry out particular functions. Name each type of cell shown and state the relationship between cell structure and cell function.
- (a)cell from a plant [Figure of plant cell] name of cell type relationship between structure and function[4]
- (b)cell from human blood [Figure of human blood cell] name of cell type relationship between structure and function[6]
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Mark scheme
Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.
- [4] root hair; long / extension / projection / finger-like AW ; increased / large + surface area ; uptake AW of + water; osmosis / diffusion ; uptake AW of + ions / named ion / minerals / salts; active transport;
- [6] red blood / erythrocyte ; biconcave ; increased / large + surface area ; oxygen + in / out / contained / carried AW ; oxygen + diffusion; no nucleus / anucleate; increased / large + volume / space; haemoglobin ; oxygen + binding / attachment / combine OR reference to oxyhaemoglobin ; flexible / elastic / change shape / can squeeze ; into / through + capillaries ;
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