What are ribosomes made up of?

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SSC Selection Post 2024 (Higher Secondary Level) Official Paper (Held On: 26 Jun, 2024 Shift 2)
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  1. Only RNA
  2. Only proteins
  3. Only DNA
  4. Proteins and RNA

Answer (Detailed Solution Below)

Option 4 : Proteins and RNA
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The correct answer is Proteins and RNAKey Points

  •  Ribosomes are made up of both proteins and RNA
  • These two components combine to form two subunits – a large subunit and a small subunit – which together make a functional ribosome.
  • Ribosomal RNA plays a crucial role in the ribosome's structure and function.
  • It helps in catalyzing the formation of peptide bonds, acting as a ribozyme, which is essential for protein synthesis.
  •  Ribosomal proteins provide structural support and aid in the proper folding of rRNA.
  • They also assist in assembling the ribosomal subunits and facilitating their interaction with messenger RNA (mRNA) and transfer RNA (tRNA) during protein synthesis.
  • Ribosomes are the site of protein synthesis in the cell.
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