Biology 0610 · IGCSE · Chromosomes, genes and proteins

Chromosomes, genes and proteins — practice question

Insulin is a protein produced by cells in the pancreas. Fig. 2.1 illustrates how insulin is synthesised in a pancreatic cell.
(a(i))[1]

State the identity of molecule A in Fig. 2.1.

(a(ii))[1]

State the identity of structure B in Fig. 2.1.

(a(iii))[3]

Explain the function of molecule A in protein synthesis, as shown in Fig. 2.1.

(b)[4]

Outline the function of insulin.

(c)[2]

State the names of two substances, other than insulin, that the pancreas secretes.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: messenger RNA / mRNA

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