Chemistry - Biomolecules Question with Solution | TestHub
ChemistryBiomoleculesAMINO ACIDMedium2 minQB
ChemistryMediumnumerical
Passage / Comprehension
Double-stranded DNA has 2500 total bases; adenine is 32%. One strand produces 1250 mRNA nucleotides.
The first 1248 mRNA bases form 416 complete codons. The last two bases remain untranslated. Ignore start and stop codons for this calculation.
How many amino acids are present in the polypeptide chain?
Answer:
416.00
Solution:
Total bases in double-stranded DNA Number of bases in one strand mRNA is transcribed from the template strand → mRNA has 1250 nucleotides Each amino acid requires 3 nucleotides (one codon) Number of codons full codons with 2 nucleotides left over
Since only complete codons code for amino acids (and the problem ignores start/stop issues), the polypeptide has 416 amino acids.
Stream:JEESubject:ChemistryTopic:BiomoleculesSubtopic:AMINO ACID
⏱ 2mℹ️ Source: QB
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