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Q. Illustrate the tyndallisation?
John Tyndall devised a process of sterilisation by steaming for a few minutes at 100o C on 3-4 successive operations separated by 24 hour intervals at room temperatures. The principle is that the first exposure kills all vegetative bacteria; spores will germinate and be killed on subsequent occasions.
Botulism Botulism is a rapidly fatal motor paralysis. It is caused by ingestion of toxin of Clostridium botulinum in food. Many species of domesticated, wild animals and birds
Trout beck zone - Lotic Ecosystem This is larger and more constant than the head stream. The greater volume of torrential water carves channels into exposed rock floor (bed ro
Explain about Folic acid Folic acid occurs as a yellow or orange-yellow, microcrystalline powder, almost without odour and taste. Water content of folic acid is up to 8.5%. Fol
Integral plasma membrane proteins are also synthesized by ribosomes on the RER, but become inserted in the rough endoplasmic reticulum membrane rather than transported into the lum
what is universality of genetic code
A transport process in which physical (hydrostatic) pressure drives part of a fluid through a membrane that selects based on pore size
Air Microbes
Water Water is the most important constituent of all living tissue. It forms up to 95% of the fresh weight of some animals. We all know that water is lost through sweat, excre
Q. How sex occurs in bacteria? Occurrence of sex in bacteria was first described by Edward Tatum and Joshua Lederberg in 1946 (Nature, volume 158, page 558) who were studying m
Various ways/techniques suggested for control of water pollution are as follows: 1. Pollutants (radio active, chemical, biological) present in water bodies can be removed by app
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