A-LevelBiologyNucleic acids and protein synthesisMay/June 2016Paper 1 Q221 Mark
The diagram shows the nucleotide sequence of a small section of a gene which is transcribed. TTCTTCCCGTTC The table shows the amino acids coded for by 10 mRNA codons. [Figure 22.1] What is the order of the four amino acids in the polypeptide translated from this small section of a gene?
ACys-Cys-Gly-Cys
BLys-Lys-Gly-Lys
CLys-Lys-Pro-Lys
DThr-Thr-Pro-Thr
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of nucleic acids and protein synthesis within the Biologysyllabus. The examiner's mark scheme requires...
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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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