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DNA and Genetic Material
Quick questions on Genes, proteins and the genetic code: O-Level DNA and Genetic Material
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the triplet code?Show answer
The bases are read in groups of three, called triplets or codons. Each triplet codes for one amino acid. Proteins are chains of amino acids, so the order of triplets in a gene sets the order of amino acids in the protein.
What is transcription?Show answer
The first stage of making a protein is transcription:
What is translation?Show answer
The second stage is translation:
What is q1?Show answer
State what is meant by a gene. [1 mark]
What is q2?Show answer
Name the two stages by which a gene is used to make a protein, and state what each produces. [2 marks]
What is q3?Show answer
A coding sequence has bases. State the number of amino acids in the protein and explain why. [2 marks]
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