A-LevelBiologyNucleic acids and protein synthesisMay/June 2023Paper 1 Q221 Mark
One characteristic of DNA is that it is a universal genetic code. What is meant by a universal genetic code?
AAll living organisms use the same triplet code for amino acids.
BAll DNA triplets code for a different amino acid.
CNot all DNA triplets code for an amino acid.
DAll living organisms contain the same four nucleic acids.
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of nucleic acids and protein synthesis within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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