S.N Prokaryotic cell Eukaryotic cell 1. An organized nucleus is absent. An organized nucleus is present. 2. Nucleus is represented by packed mass of DNA fibres, which lacks nuclear membrane and nucleoli. It contains chromatin network, nuclear membrane and nucleoli. 3. DNA is naked i.e. it lacks protein association. DNA is covered with histone proteins … Read more
Physical sciences are governed by a set of laws, such laws are rigid and show no deviations or exceptions. But, biology is a science of life. It deals with living organisms. The living organisms show enormous variations and are capable of change. Therefore, the laws of physical and chemical phenomena associated with life processes show … Read more
S.N Gram positive bacteria Gram negative bacteria 1 They retain the crystal violet stain during gram staining. They do not retain the crystal violet stain during gram staining. 2 Cell wall is simple. Cell wall is complex. 3 They appear blue/purple. They appear pink/red. 4 The thickness of wall is 20-80 nm. Thickness of wall … Read more