WASSCE Biology · Paper 1 style

Microbes

One sample question with the full working. 1 more in the app, with instant feedback and repair sessions for the traps below.

Antibiotics are used to treat infections caused by

Aviruses
Bbacteria
Cvitamin deficiency
Dall diseases

Show the answer and working

Answer: B

Antibiotics → bacteria.

Trap A Microorganism misconceptions: Bacteria: prokaryotes (no nucleus). Fungi: hyphae, spores, chitin walls (yeast, Rhizopus). Viruses: non-cellular, reproduce only inside host cells. Many microbes are useful (decomposers, fermentation, nitrogen fixation).

Trap C Confuses food classes and their functions: Carbohydrates and fats: energy. Proteins: growth and repair. Vitamins and minerals: protection (e.g. vitamin C → scurvy, iron → anaemia, iodine → goitre). Water and roughage are needed too. A balanced diet has all classes in the right proportions.

Trap D Over-generalises a rule to all cases: Absolute words (all, always, every, never) are rarely right in biology. Try to name one exception; if you can, reject the option.

Traps in Microbes

Microorganism misconceptions
Bacteria: prokaryotes (no nucleus). Fungi: hyphae, spores, chitin walls (yeast, Rhizopus). Viruses: non-cellular, reproduce only inside host cells. Many microbes are useful (decomposers, fermentation, nitrogen fixation).
Confuses food classes and their functions
Carbohydrates and fats: energy. Proteins: growth and repair. Vitamins and minerals: protection (e.g. vitamin C → scurvy, iron → anaemia, iodine → goitre). Water and roughage are needed too. A balanced diet has all classes in the right proportions.
Over-generalises a rule to all cases
Absolute words (all, always, every, never) are rarely right in biology. Try to name one exception; if you can, reject the option.

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