Ans. The family of uncommon progressive neurodegenerative brain illnesses known as transmissible spongiform encephalopathies (TSEs) or prion diseases affects both humans and animals. They invariably result in death and have protracted incubation periods before symptoms appear. Prions, improperly folded proteins, which accumulate in the brain and produce brain damage and the disease's recognizable symptoms, are thought to be the cause of TSEs.
A solid cylinder of mass 2 kg and radius 0.2 m is rotating about its own axis without friction with angular velocity 5 rad/s. A particle of mass 1 kg moving with a velocity of 5 m/s strikes the cylinder and sticks to it as shown in figure.
The angular velocity of the system after the particle sticks to it will be:
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows: