WASSCE Biology · Paper 1 style

Cell

One sample question with the full working. 2 more in the app, with instant feedback and repair sessions for the traps below.

Energy is released in the cell mainly in the

Anucleus
Bmitochondria
Cchloroplast
Dcell wall

Show the answer and working

Answer: B

Respiration: mitochondria.

Trap A Confuses organelle functions: Nucleus: controls activities, holds DNA. Mitochondrion: aerobic respiration. Ribosome: protein synthesis. Chloroplast: photosynthesis. Cell membrane: selectively permeable. Cell wall (cellulose): support. Vacuole: cell sap, turgor.

Trap C Mixes up a pair of similar technical terms: Make a two-column table for each confusable pair with one defining feature each, and a memory hook (aTLas holds the 'world' (skull) and nods; aXis lets you shake 'no'). Underline the defining feature the stem gives before you look at the options.

Trap D Gives the job of a neighbouring structure or stage: Learn structures as pairs of 'name → one job' and contrast neighbours: ribosome makes protein, mitochondrion releases energy; cochlea hears, semicircular canals balance. When two options sit in the same organ or process, ask which one does exactly the job in the stem.

Traps in Cell

Confuses organelle functions
Nucleus: controls activities, holds DNA. Mitochondrion: aerobic respiration. Ribosome: protein synthesis. Chloroplast: photosynthesis. Cell membrane: selectively permeable. Cell wall (cellulose): support. Vacuole: cell sap, turgor.
Mixes up a pair of similar technical terms
Make a two-column table for each confusable pair with one defining feature each, and a memory hook (aTLas holds the 'world' (skull) and nods; aXis lets you shake 'no'). Underline the defining feature the stem gives before you look at the options.
Gives the job of a neighbouring structure or stage
Learn structures as pairs of 'name → one job' and contrast neighbours: ribosome makes protein, mitochondrion releases energy; cochlea hears, semicircular canals balance. When two options sit in the same organ or process, ask which one does exactly the job in the stem.
Takes one contributing factor as the whole answer
Watch for 'only', 'just', 'mainly'. Ask: is this the MAIN reason, or one contributor? If it would need other things to work (plasma proteins need platelets), it is incomplete.

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