Another structure found in the cytoplasm is the nucleoid which is an irregularly shaped region that contains the cell's chromosome.

在细胞质发现另一个结构拟，遗传物质不规则形状域。

Additionally to the genetic material contained within the nucleoid, many bacteria contain extra chromosomal DNA molecules called plasmids.

除了在拟遗传物质外，许多细菌有额外DNA分子，称为质粒。

The cytoplasm contains ribosomes which are the site of protein synthesis, the nucleoid which contains the genetic material, and plasmids which contain genes that confer a selective advantage to the bacterium.

细胞质有糖体，它们蛋白质合成部位；拟有遗传物质以及质粒；质粒有赋予细菌选择性优势基因。