Bacteria
Bacteria are single celled microbes. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. Instead their control centre containing the…
Flagella Stain
Flagella are too thin to be visualized using a bright field microscope with ordinary stains, such as the Gram stain, or a simple stain. A wet mount technique is used…
Capsule Stain
Capsule stain is a type of differential stain which uses acidic and basic dyes to stain background & bacterial cells respectively so that presence of capsule is easily visualized. Capsule…
What Is an Acid-Fast Stain Test?
An acid-fast stain is a laboratory test performed on a sample of bloodsputum, or phlegmurinestoolbone marrowskin tissue Your doctor can order this test to find out if you have tuberculosis…
Gram Staining: Principle, Procedure, Interpretation, Examples and Animation
Gram Staining is the common, important, and most used differential staining techniques in microbiology, which was introduced by Danish Bacteriologist Hans Christian Gram in 1884. This test differentiate the bacteria into…
Difference Between Light Microscope and Electron Microscope
Microscopes come in a variety of sizes, each with its specific suitability. The most common categories are the electron microscope and the light microscope. Each of these microscopes possesses distinct…
The Species Concept in Microbiology
The number of species of bacteria and archaea is surprisingly small, despite their early evolution, genetic, and ecological diversity. Judging Species in an Asexual Context Biological classification: The hierarchy of…
Microorganisms Defined
Microorganisms are a collection of organisms that share the characteristic of being visible only with a microscope. They constitute the subject matter of microbiology. Members of the microbial world are very diverse…
History of Microbiology
Microbiology has had a long, rich history, initially centered in the causes of infectious diseases but now including practical applications of the science. Many individuals have made significant contributions to…
Microbes and the Origin of Life on Earth
Life on Earth is thought to have originated from the oldest single-cell archaea and bacteria. Scientific evidence suggests that life began on Earth some 3.5 billion years ago. Since then,…
