Final answer:
The assertion that ribosomes are responsible for protein synthesis in all bacteria is true. Ribosomes, composed of rRNA and protein, translate mRNA into proteins and can be free-floating or attached to cellular structures.
Step-by-step explanation:
The statement 'Ribosomes Tiny particles composed of protein and RNA that are the sites of protein synthesis In all Bacteria.' is true. Ribosomes are indeed essential cellular structures in all bacteria, as well as eukaryotic organisms, responsible for protein synthesis. Ribosomes are complex structures composed of ribosomal RNA (rRNA) and proteins and consist of two subunits: a large and a small subunit. These organelles are not enclosed by a membrane and can be found either floating freely in the cytoplasm or attached to the cytoplasmic side of the endoplasmic reticulum or the nuclear envelope. Electron microscopy has revealed ribosomes as clusters or single particles, and their primary function is to translate the code from messenger RNA (mRNA) into a sequence of amino acids, ultimately forming proteins.