Question

Describe how bacteria reproduce and provide a drawing

Answer 1

Ans) Bacteria divide by the process of Binary Fission.Bacteria contain extra chromosomal,circular segment of DNA known as plasmid. The steps of binary fission is as follows :

1) In the first step,cell elongation will occur.

2) After cell elongation, the plasmid or DNA will replicate.

3)Par-M proteins nucleate to form small,dynamic filaments. Par-M proteins are actin homolog. Par-R proteins binds to specific DNA sequences in the plasmid and also helps to stabilize the ends of Par-M filaments.

When the plasmid or DNA duplicates, Par-M ends are stabilized and pushes the duplicated plasmid to the opposite ends of the cell.

4) Once the plasmids are at opposite ends of the cell, Fts-Z ring formation will occur exactly at the centre of the bacterial cell. Fts-Z ring is tubulin homolog.

5) After Fts-Z ring formed at the centre, septum formation will occur and eventually two new bacteria will be formed each having respective plasmid or its own DNA.

For better understanding, you can observe the diagram which I have made, ( I have uploaded full image along with many cropped ones so that pixels wont get distorted or image wont get blurred!)