Omicron (B.1.1.529)| SARS-CoV-2 Variant of Concern

Comments

Post a Comment

Popular posts from this blog

What is bioinformatics

Image
 INTRODUCTION TO BIOINFORMATICS Over the past few decades rapid developments in genomics and other molecular research technologies and, advancement in information technologies have combined to produce a tremendous amount of information related to molecular biology.  Bioinformatics is an evolving, interdisciplinary field of biology. Bioinformatics is the somewhat new and rather unfortunate term that is commonly employed for referring to the use of computers in biological research.  Bioinformatics is the application of mathematics/statistics and computer to the field of molecular biology. It is the name given to these mathematical and computing approaches used to glean understanding of biological processes.  The term bioinformatics was coined by Ben Hesper and Paulien Hogeweg in 1978 for the study of informatic methods in biological systems. Its primary use since the late 1980s has been in genetics & genomics, mainly in large-scale DNA sequencing area of genomics....
Read more

chapter 3 | Biodiversity part1

Image
Definition: The term “biodiversity” has been derived from ‘bio’ and ‘diversity ’. “Diversity” means variety within a species and among species.  Biodiversity is a measure of the variety of organisms present in  different ecosystems. The diversity of plants’ (flora) and animals’ (fauna) in a region depends on climate, altitude, soils and the presence of other species. Biodiversity is not distributed evenly on Earth. Importance of biodiversity Biodiversity provides food for humans.  Drugs are derived, directly or indirectly, from biological sources.   Industrial materials e.g. building materials, fibres, dyes, resins, gums, adhesives, rubber and oil are derived directly from plants. Biodiversity plays important role in making and maintaining ecosystems.  It plays a part in regulating the chemistry of our atmosphere and water supply. Biodiversity is directly involved in recycling nutrients and providing fertile soils. Classification - Aims And Principles bio...
Read more

shapes of molecules Valence Shell Electron Pair Repulsion |VSEPR

Image
The Shapes of Molecules (VSEPR Theory)  The shapes of molecules are  predicted and rationalize by  Va l ence  Sh ell Electron Pair Repulsion (VSEPR) theory .  The theory is based on minimizing the electrostatic repulsion between electron pairs, as first proposed by Sidgwick and Powell in 1940,   then generalized by Gillespie and Nyholm in 1957. Determine the number of lone pairs on the central atom in the molecule, and add the number of bonded atoms (a.k.a. bonding domains) the  steric number  defines the electronic shape of the molecule by minimizing repulsion. For example a steric number of three gives a trigonal planar electronic shape. The angles between electron domains are determined primarily by the electronic geometry (e.g., 109.5° for a steric number of 4, which implies that the electronic shape is a tetrahedron) These angles are adjusted by the hierarchy of repulsions: (lone pair - lone pair) > (lone pair - bond) > (bond - bond)
Read more