The organelle responsible for making proteins for a cell is the ribosome.

Here's why:

* Ribosomes are the protein synthesis factories: They read the genetic code from messenger RNA (mRNA) and use that information to assemble amino acids into protein chains.

* They can be free-floating or bound to the endoplasmic reticulum (ER): Free ribosomes produce proteins that stay within the cytoplasm, while ER-bound ribosomes create proteins destined for secretion or inclusion in membranes.

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