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.
Column I | Column II | ||
1. | Trypsin | p. | Fights infectious agents |
2. | GLUT - 4 | q. | Is an intercellular ground substance |
3. | Collagen | r. | Works as an enzyme |
4. | Antibody | s. | Enables glucose transport into cells |
Column - I | Column - II | |
Saprophyte | - | Symbiotic association of fungi with plant roots |
Parasite | - | Decomposition of dead organic materials |
Lichens | - | Living on living plants or animals |
Mycorrhiza | - | Symbiotic association of algae and fungi |
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: