Question

Study the diagram given below and answer the questions that follow:

1. Identify the part labelled as ‘A’:
   1. Leading strand
   2. Lagging strand
   3. DNA template
   4. RNA template
2. The enzyme which joins the small fragments of newly synthesised DNA on the 5’ → 3’ template strand is:
   1. Helicase
   2. Topoisomerase
   3. DNA ligase
   4. RNA polymerase
3. The overall process of DNA replication is:
   1. Continuous
   2. Lagging
   3. Discontinuous
   4. Semi-discontinuous
4. The alphabet ‘B’ and ‘C’ represent:
   1. mRNA
   2. mRNA
   3. Okazaki fragments
   4. Single-strand binding protein
5. The role of the enzyme DNA polymerase is to:
   1. unwind the DNA helix
   2. synthesis mRNA
   3. cause the polymerisation of the complementary daughter strand
   4. synthesise RNA primer

Answer 1

1. Leading strand
2. DNA ligase
3. Semi-discontinuous
4. Okazaki fragments
5. cause the polymerisation of the complementary daughter strand