While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions (Figure 1). In prokaryotic cells, DNA bundles together in a region called the nucleoid. Primitive ...

The high prokaryotic mortality in pelagic habitats is caused by both viral lysis and predation by ciliated and flagellated protists. Viral lysis is thought to have the greatest effect on prokaryotic ...

How do bacteria avoid wasteful production of unnecessary proteins when their genes are always on? The answer lies in regulating the operon. As trp levels increase, trp binds to trpR, causing a ...