O-LevelBiologyHuman Nutrition5090/22 · Oct/Nov 2016 · Q910 Marks
Describe the role of the mosquito in the spread of disease.
- (a)Describe the role of the mosquito in the spread of disease.[5]
- (b)Describe the symptoms of named diseases that may result from deficiencies in a balanced diet.[5]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [5] named mosquito-borne disease;
- vector;
- parasite/pathogen/Plasmodium ;
- female (mosquito);
- bites/feeds on + infected person;
- picks up parasite/pathogen ;
- (transferred) to uninfected person;
- sucks blood/blood meal AW;
- injects/transfers + parasite/pathogen;
- [3] any named (different) disease + correct dietary deficiency;
- [2] any symptom correctly linked to a disease/deficiency;
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