Question

explain bacteria and its types .

Answer 1

A bacterium is a single-celled (unicellular) microorganism that does not have a nucleus or any other membrane-bound organelles. Bacteria are sometimes called 'prokaryotes.' ... For example, the bacteria may survive an attack from the human body's immune system.

Answer 2

1.Unicellular, independent / parasitic organisms. Sometimes many bacteria together form colonies. 2. Bacterial cell is prokaryotic with cell wall, but distinct nucleus or cell organelles are absent.3. They produce by simple binary fission.4. In favourable conditions, bacteria grow vigorously and can double their number in 20 minutes and bacteria do not have true nucleus, cell organelles or plasma membrane.