Biology 9700 · AS & A Level · Protein synthesis

Protein synthesis — practice question

Fig. 1.1 illustrates five biological molecules.
(a)[1]

State the name of the bond in molecule A that the arrow points to.

(b)[1]

Molecule B is described as a saturated fatty acid. State why molecule B is given this description.

(c)[1]

Molecule D is a polymer. State the monomer used to synthesise this polymer.

(d)[1]

State the letter of the molecule that could be produced by hydrolysis of a polypeptide.

(e)[1]

State the letter of the molecule that is a component of the cell surface membranes of eukaryotic cells.

(f)[1]

Molecule A and molecule C dissolve in water. Molecule B does not dissolve in water. Explain why molecule A and molecule C dissolve in water, whereas molecule B does not dissolve in water.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: glycosidic bond

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI