(a) In the human diet, zinc, iron and copper are examples of minerals.

(b) The walls of xylem vessels are reinforced with lignin.

(c) Where in a cell would you expect to find phospholipids? In the cell membrane

(d) Vitamin C is an example of a water-soluble vitamin.

(e) Name a disorder associated with a deficiency of the vitamin that you have named in (d) or of another named vitamin in the diet. Scurvy

(f) What are the final products of the digestion of a protein? Amino acids