Final answer:
Ribosomes are the cellular structures responsible for protein synthesis by translating messenger RNA into proteins.
Explanation:
Ribosomes are the cellular structures responsible for protein synthesis. They can appear as
either clusters or tiny dots in the cytoplasm and may be attached to the plasma membrane
or endoplasmic reticulum. Ribosomes consist of large and small subunits and are essential for
translating mRNA into proteins.
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