Mycoplasma: Structure, Habitat, Morphology, and Clinical Significance

Mycoplasma diagram

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: Characteristics, Structure, Life cycle and Examples

Actinomycetes: Characteristics, Structure, Life cycle and Examples

Actinomycetes are a group of prokaryotic unicellular and gram-positive bacteria with high G+C content in their DNA.

Vaccines: Definition, Types and Production of Vaccines

Steps in the Production of Vaccines

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.

HIV/AIDS virus: Structure, Symptoms, Treatment, Prevention and Mode of Action

Human Immunodeficiency Virus structure

What is HIV/AIDS virus? HIV (Human immunodeficiency virus) is a retrovirus that belongs to the genus Lentivirus, part of the family Retroviridae. It is the causative agent of AIDS (Acquired Immunodeficiency Syndrome).

Tobacco Mosaic Virus: History, Importance , Structure and Symptoms

Tobacco Mosaic Virus diagram

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: Definition, Structure, Types and Life cycle

Diagrammatic structure of Bacteriophage

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: Definition, Characteristics, Morphology and Classification

Structure of Virus labelled Diagram

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: Definition, Composition and Classification

Bacterial Culture Media Definition, Composition and Classification

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

Colicins | Microbiology notes

Bacterial Colicins

Colicins are proteins produced by some strains of Escherichia coli that are lethal for related strains of E.coli.

Bacteria: Definition, Characteristics, Structure and Diagram

Labelled diagram of bacteria

Bacteria are prokaryotic, unicellular microorganisms which are characterized by their simple cellular structure and lacks membrane-bound organelles such as a nucleus, mitochondria, and Golgi bodies.