AP BIOLOGY

Detailed explanation-1: -Prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.

Detailed explanation-2: -ribosome, particle that is present in large numbers in all living cells and serves as the site of protein synthesis. Ribosomes occur both as free particles in prokaryotic and eukaryotic cells and as particles attached to the membranes of the endoplasmic reticulum in eukaryotic cells.

Detailed explanation-3: -Both prokaryotes and eukaryotes contain ribosomes. Ribosomes are not membrane-bound, and are primarily composed of rRNA. Prokaryotes require ribosomes in order to synthesize proteins.

Detailed explanation-4: -Ribosomes are special because they are found in both prokaryotes and eukaryotes. While a structure such as a nucleus is only found in eukaryotes, every cell needs ribosomes to manufacture proteins. Since there are no membrane-bound organelles in prokaryotes, the ribosomes float free in the cytosol.

Detailed explanation-5: -Ribosomes are non-membrane bound organelles found in both eukaryotic as well as prokaryotic cells.