Question

Write explanatory notes on (i) bacterial reproduction (ii) mycoplasma (iii) archaebacteria.

Answer 1

(i) Bacterial reproduction: Bacteria shows asexual reproduction. They reproduce mostly by cell division called as binary fission. In this process, a single bacterium divides into two identical daughter cells. The process begins when the DNA of the bacterium replicates into two.

(ii) Mycoplasma: These are type of bacteria that lack a cell wall around their cell membrane. Due to lack of cell wall, they are resistant to many common antibiotics such as penicillin that inhibit cell wall synthesis. They are either parasitic or saprotrophic.

(iii) Archaebacteria: These are single-cell prokaryotic organism. There are three groups of Archaebacteria, namely methanogens, halophiles and thermophiles.