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5. Which of the following types of bonds is Item 8 refers to the following structures
responsible for stabilizing the secondary found in cells.
structure of a protein?
I. Cell wall
(A) Disulphide II. Cell Membrane
(B) Hydrophobic III. Centrioles
(C) Ionic IV. Golgi Apparatus
(D) Hydrogen
8. Which of the following combinations are
features common to BOTH plant and animal
6. Which of the following molecules shows cells?
the characteristics listed below?
(A) I and II
I. The triple helices are linked by (B) II and IV
covalent cross links. (C) II, III and IV
II. They are polypeptides in the form of (D) II and III
three helices.
III. Every third amino acid in each helix
is glycine. 9. All of the following characteristics are typical
of prokaryotes EXCEPT
(A) Collagen
(B) Glycogen (A) they contain both ribosomes and a
(C) Haemoglobin nucleus
(D) Glycoprotein (B) their average diameter ranges
between 0.5 - 10 µm
(C) they have circular DNA
Item 7 refers to the diagram below which (D) they are mainly unicellular
shows the ultrastructure of a eukaryotic cell.

10. Xylem can MOST accurately be described
as a tissue because it

(A) consists of more than one type of cell
(B) consists of vessels conducting mainly
water and mineral salts
(C) is impregnated with lignin
(D) provides mechancial support for
plants

7. Which of the following cell structures,
labelled 1, 2, 3 and 4, is involved in the
synthesis of lipids and steriods?

(A) 1
(B) 4
(C) 2
(D) 3

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02107010/SPEC 2017