OF (Oxidation-Fermentation)Test – Principle, Purpose, Procedure

OF (Oxidation-Fermentation) Test Principle, Purpose, Procedure

The Oxidation–Fermentation (OF) test is a biochemical test that is used to differentiate bacteria on the basis of their ability to metabolize carbohydrates by oxidative or fermentative pathways. It is the process that helps in identifying whether the organism utilizes carbohydrate in the presence of oxygen or in the absence of oxygen. This test was … Read more

Brief History And Developments In Industrial Microbiology

History and Development in industrial microbiology

Industrial microbiology is the use of microorganisms like bacteria, fungi, and yeast for producing useful materials on a large scale. It is the process where these microbes are grown under controlled conditions so that they can convert raw materials into different products. It is the process mainly linked with fermentation and other bioconversion methods, and … Read more

Biological Clocks – Circadian rhythms, Tidal rhythms, Lunar rhythms, Jet lag, Entrainment

Biological Clocks

What is Biological Clocks? Biological clocks are the internal timing system present in living organisms, and it is the process by which rhythmic changes occur in a regular pattern. It is an endogenous mechanism that runs for about 24 hours, and this rhythmic behaviour is referred to as circadian rhythm. The rhythm continues even in … Read more

Okazaki Fragments – Formation, Enzymes, Importance

Okazaki Fragments - Definition, Discovery, Formation, Enzymes, Importance

Okazaki fragment is the short segment of DNA that is synthesized on the lagging strand during DNA replication. It is formed because the DNA polymerase can extend the new strand only in the 5’–3’ direction, so the strand that is oriented in the 3’–5’ direction is produced in a discontinuous manner. It is initiated by … Read more

Post-transcriptional Modification – Definition, Types, Process, Importance

Post-transcriptional modification

Post-transcriptional modification is a set of biological processes common to most eukaryotic cells by which an primary RNA transcript is chemically altered following transcription from a gene to produce a mature, functional RNA molecule that can then leave the nucleus and perform any of a variety of different functions in the cell.

Difference Between Analytical Balance and Triple Beam Balance

Difference Between Analytical Balance and Triple Beam Balance

What is Analytical balance? What is Triple beam balance? Difference Between Analytical Balance Vs Triple Beam Balance 1. Precision – Analytical balance gives very high precision (up to 0.0001 g) while triple beam balance only measure till 0.01 g, so less sensitive comparatively. 2. Power Source – Analytical balance mostly works on electric / electronic … Read more

Biogeny (Formation of Primitive Life)

Biogeny (Formation of Primitive Life)

What is Biogeny (Formation of Primitive Life)? 1. Formation of nucleic acids and nucleoproteins The formation of nucleic acids and nucleoproteins considered as one of the key transition in Biogeny where information molecules begin to store and transmit life instructions. It started after Chemogeny produced small organic monomers like nucleobases, sugars, phosphates, etc. Prebiotic synthesis … Read more

Polarizing Microscopes – Principle, Parts, Procedure, Uses

Polarizing Microscopes - Principle, Definition, Parts, Applications

What is Polarizing Microscope? Principles of Polarized Light Microscopes The Light Path and Image Formation of Polarized Light Microscopes Parts of a Polarized Light Microscope 1. Light Source – usually a halogen bulb that gives bright white light; it must be stable so the color don’t change by heating or voltage drift. 2. Condenser – … Read more

Cleavage – Definition, Types, Planes, Patterns, Significance

Cleavage - Definition, Types, Planes, Patterns, Significance

What is cleavage? Characteristics of cleavage Step by step process of Cleavage Types of cleavages The cleavage pattern in embryos mainly determined by yolk quantity and how that yolk is distributed by the cytoplasm.Also, timing and direction of mitotic spindle (inside egg) play important role. Yolk usually slow / restrict the process of complete division. … Read more

Plasmid Replication – Mechanism With Diagram

Plasmid Replication - Mechanism With Diagram

What are plasmids? Copy Number and Physical Nature of Plasmids Properties of Plasmids Plasmid Replication Mechanism 1. Rolling circle Mode of Replication Rolling-Circle Replication (RCR) is described as a method of DNA replication that is used by some viruses, plasmids and circular genetic elements. A single-strand nick is introduced at the origin and the 5′-end … Read more