A-Level UK (AQA, Edexcel, OCR) · Biology
Nucleic acids and protein synthesis
7 practice questions, each with the answer and an explanation.
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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 7 questions
- Which statement about DNA replication is correct?
- A DNA strand has 30% adenine. What percentage of the double-stranded molecule is guanine?
- Which molecule carries the amino acid to the ribosome during translation?
- The mRNA codon is 5'-GAU-3'. Which anticodon on the tRNA pairs with it?
- In eukaryotes, what happens to pre-mRNA before it leaves the nucleus?
- A gene mutation changes a codon from UAU to UAC, but the amino acid is unchanged. What property of the genetic code does this show?
- A gene has 900 nucleotides in its coding sequence (excluding any stop codon). How many amino acids will the polypeptide contain?
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