Unit 16 · Reproduction

Question Bank

Cambridge IGCSE Biology 0610 · 118 questions

Q27Reproduction

Why do different cells make different proteins?

(a)They contain different genes

(b)They have different numbers of chromosomes

(c)Only some genes are expressed in each cell

(d)Proteins are made in the nucleus only when needed

Correct answer: (c) Only some genes are expressed in each cell

Explanation: All body cells have the same genes, but only the genes needed by that cell are switched on.

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