Mycoplasma are the smallest known free-living organisms without a cell wall. They are unicellular, prokaryotic (Gram -ve), and independently replicating (i.e., they contain metabolic machinery to grow and multiply in the absence of other cells, thus showing autonomous growth).
Actinomycetes are a group of prokaryotic unicellular and gram-positive bacteria with high G+C content in their DNA.
Vaccines (Latin: vacca = cow) preparation/suspension or extract of dead/attenuated (weakened) germs of a disease which, on inoculation (injection) into a healthy person, provides temporary/permanent active/passive immunity by inducing antibody formation.
Tobacco Mosaic Virus (TMV) is a plant virus that mainly infects tobacco plants but can also affect other crops, including tomatoes and peppers. It is a rod-shaped virus, one of the first ever discovered and studied.
Bacteriophages are the viruses which infect bacteria. These viruses that parasitizes the bacteria. Bacteriophages were discovered independently by Frederick William Twort in 1915 and Félix d’Hérelle in 1917.
Viruses are intracellular obligate parasites, non-cellular (acellular) sub-microscopic organisms. The word “virus” means venom or poisonous fluid. They lack cell organelles and make use of the protein synthetic machinery of the host cell.
Bacterial Culture Media Bacterial culture media are nutrient-rich substances designed to support the growth, proliferation, and maintenance of bacterial populations in a controlled laboratory environment. One of the most important reasons for culturing bacteria in vitro is its utility in diagnosing infectious diseases. Isolating a bacterium from sites in the body normally known to be … Read more
The main differences between bacteria and virus is that bacteria are single-celled, living organisms that can survive and reproduce independently, while viruses are non-living infectious particles that require a host cell to replicate.
Colicins are proteins produced by some strains of Escherichia coli that are lethal for related strains of E.coli.
Microbiology is the study of organisms and agents that are too small to be visible with the unaided eye – that is, the study of microorganisms.