Organic and Inorganic Molecules of Life

Four chemical elements that make up the majority of living biological matter are Carbon, Hydrogen, Oxygen and Nitrogen. Organisms are made of both organic and inorganic substances. Inorganic substances Some of the most common inorganic substances needed for life are ..

Basic Features of Life

Biology is the science of living things or organisms.  Scientific evidence suggests that life began on Earth approximately 3.5 billion years ago by variously proposed mechanisms. Basic Features Life is considered a characteristic of organisms that exhibit all or most ..

Pasteurization

Pasteurization is one of the methods of preservation of products such as milk, alcoholic beverages etc. at higher temperatures. Pasteurization is defined as the process of heating products to a particular temperature and holding it at that temperature for a ..

BCG: Bacillus Calmette-Guérin (or Bacille Calmette-Guérin

Bacillus Calmette-Guérin (or Bacille Calmette-Guérin, BCG) is a vaccine against tuberculosis that is prepared from a strain of the attenuated (weakened) live bovine tuberculosis bacillus, Mycobacterium bovis, that has lost its virulence in humans by being specially cultured in an ..

List of Human Diseases Caused By Bacteria and Viruses

Disease Causing Agent Infection / Transmission AIDS Human T -cell Leukemia Virus HTLV-III blood and sperms , thru sexual contact homo or heterosexual) Ascariasis Ascaris lumbricoides raw vegetables infected with eggs Athletes’ Foot Trichophyton bad foot hygiene Bacillary Dysentery Shigella ..

What are main communicable and non-communicable human diseases?

Communicable Disease or infectious disease is resulting from the presence of pathogenic microbial agents, including pathogenic viruses, pathogenic bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. The main communicable diseases are as follows: Diseases Caused By Virus ..