What are ribosomes?

Study for the Pivot Point The Building Blocks of the Human Body 105E.01. Engage with multiple choice questions and flashcards, complete with hints and explanations. Get ready for your exam!

Multiple Choice

What are ribosomes?

Explanation:
Ribosomes are the protein-building machines of the cell. They translate the message carried by mRNA into a polypeptide chain by linking amino acids together in the order specified. They are RNA–protein complexes, with ribosomal RNA providing the catalytic core that forms peptide bonds and ribosomal proteins helping assemble the machine. This combination makes them best described as protein builders made up of RNA. They are not DNA strands, not just RNA molecules, and not lipid membranes.

Ribosomes are the protein-building machines of the cell. They translate the message carried by mRNA into a polypeptide chain by linking amino acids together in the order specified. They are RNA–protein complexes, with ribosomal RNA providing the catalytic core that forms peptide bonds and ribosomal proteins helping assemble the machine. This combination makes them best described as protein builders made up of RNA. They are not DNA strands, not just RNA molecules, and not lipid membranes.

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