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9700 · 6.2

Protein synthesis

Every cell in your body relies on proteins to function – from enzymes catalysing reactions to structural components like collagen, and even hormones like insulin. The instructions for making these vital molecules are stored in your **DNA**, in units called **genes**. Protein synthesis is the intricate process by which this genetic information is converted into a functional protein. It's a fundamental concept in Biology 9700, linking directly to genetics and biochemistry, and frequently tested in both Paper 1 and Paper 2.

Need to know

What you need to know

  • Describe the sequential processes of transcription and translation in protein synthesis.
  • Explain the specific roles of mRNA, tRNA, and ribosomes (containing rRNA) in accurate protein production.
  • Discuss the characteristics of the genetic code and the differences in gene expression between prokaryotes and eukaryotes.
  • Outline the process of post-transcriptional modification in eukaryotes, including the removal of introns and addition of a 5' cap and poly-A tail.

Explanation

Protein synthesis

  1. Describe the sequential processes of transcription and translation in protein synthesis.
  2. Explain the specific roles of mRNA, tRNA, and ribosomes (containing rRNA) in accurate protein production.
  3. Discuss the characteristics of the genetic code and the differences in gene expression between prokaryotes and eukaryotes.
  4. Outline the process of post-transcriptional modification in eukaryotes, including the removal of introns and addition of a 5' cap and poly-A tail.