Q24 · 2025 · Paper 1Unclassified2 marks
QUESTION 24 (2 marks)
Describe the structure of plasmids and their role in making recombinant DNA.
WORKED SOLUTION
2 marksQCAA guide · typeset solution
QCAA sample response and mark allocation
24 | Plasmids are small, circular DNA molecules found in bacteria. They are used as vectors to carry new genes into cells and allow the new gene to be replicated. | • describes the structure of plasmids [1 mark] • describes the role of plasmids in recombinant DNA technology [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
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