The ribosomes are the cellular structures responsible for making proteins by translating mRNA into amino acid sequences. They play a critical role in the process of protein synthesis. Ribosomes can be found in the cytoplasm or attached to the endoplasmic reticulum. ;
The part of the cell responsible for making proteins is ribosomes. They translate messenger RNA (mRNA) into amino acid sequences, forming proteins essential for cell function. Thus, the correct answer is d) Ribosomes.
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