What is the difference between Bacteria and Virus?
The difference between Bacteria and Virus are : Bacteria are covered by a cell wall made upon of polysaccharides, protein and lipids whereas Viruses are covered by a sheath of protein called capsid.
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Write a short note on the beneficial effects of bacteria
Bacteria are also beneficial to the human beings in many ways in spite of their many harmful effects. They have a great role in agriculture. Bacteria help in decaying of organic substances, increase the fertility of soil, help in ammonification, nitrification and fixation of nitrogen.
Structure and economic importance of bacteria
The bacterial cell is surrounded by a cell wall. Cell wall is basically made up of polysaccharides, lipids and proteins. Cell wall contains a substance mucopeptide in which molecules of acetyl glucosamine and acetyl muramic acid join each other.
Structure, mode of nutrition of bacteria and briefly describes their economic importance
Bacterial is very small, simple unicellular organisms with a length varying from 2 to 5. On the basis of shape bacteria are either coccus (spherical), bacillus (rod shape), spirillum (spiral) or vibro (comma) types.