A-LevelBiologyNucleic acids and protein synthesisOct/Nov 2019Paper 1 Q371 Mark
Different antibiotics function in different ways. It is important that the antibiotic kills the bacteria, but does not harm the infected human. The antibiotic tetracycline has been found to affect the way in which human mitochondria function. Which statements could explain why human mitochondria function is affected by tetracycline?
AThe antibiotic prevents the synthesis of peptidoglycan cell walls.
BThe antibiotic prevents synthesis of linear DNA.
CThe antibiotic prevents translation of circular DNA.
DThe antibiotic prevents translation by binding to 70S ribosomes.
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The correct answer is D. 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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