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Learning objective

Describe translation using mRNA, tRNA, codons, anticodons and ribosomes.

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Topic

Genetic information official content

Subtopic

DNA and protein synthesis

Aqa A Level BiologyGenetic information, variation and relationships between organisms

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Quick explanation

Describe translation using mRNA, tRNA, codons, anticodons and ribosomes

  • This point belongs to Genetic information official content, especially DNA and protein synthesis.
  • You need to be able to describe translation using mRNA, tRNA, codons, anticodons and ribosomes.
  • The key ideas to know are tRNA, mRNA, and ribosome.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

tRNAmRNAribosomeanticodontranslationcodon

Why it matters

This objective helps connect DNA and protein synthesis to exam-style questions, flashcards, and revision notes for Genetic information official content.

Quick student answer

Which of the following correctly describes the role of tRNA in translation?

Direct answer

tRNA brings amino acids to the ribosome, matching them with the corresponding codons on the mRNA.

Key terms

  • Anticodon: A sequence of three nucleotides in tRNA that is complementary to a specific codon in mRNA.
  • Peptide bond: The covalent bond formed between two amino acids during protein synthesis.

Common trap

Confusing tRNA and mRNA roles: Remember that mRNA carries the genetic information from DNA, while tRNA brings the corresponding amino acids to the ribosome.

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