ESAT (Engineering and Science Admissions Test) · Biology
DNA and protein synthesis
5 practice questions, each with the answer and an explanation.
Practise DNA and protein synthesis now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 5 questions
- A DNA template strand has the sequence 3'-TACGGT-5'. What is the sequence of the mRNA transcribed from it?
- An mRNA coding region contains nucleotides, including the start codon but excluding the stop codon. How many amino acids are in the polypeptide?
- Bacteria are grown for many generations in a medium containing heavy nitrogen (), then moved to a medium containing normal nitrogen (). After two rounds of semi-conservat…
- In a DNA molecule, of the bases are adenine. What percentage are guanine?
- A point mutation changes the DNA codon CTT to CTC, but the amino acid in the protein is unchanged. Why?
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