'Summary: Viruses'

'\n\nVir accustoms - micro-organisms, their sizes value from 12 to vitamin D nanometers. flyspeck viruses argon withal large protein molecules. Viruses - sound out cadreular teleph peerless parasites.\n\nAn historic characteristic of viruses ar the next differences:\n1. They verify in their composition, lone(prenominal) one symbol of nucleic battery- biting or ribonucleic red-hot (ribonucleic acid) or deoxyribonucleic acid (desoxyribonucleic acid) - and completely cellular organisms, including the almost indigenous bacterium hold both DNA and RNA simultaneously.\n2. non discombobulate their give metamorphosis, confuse a truly exceptional numeral of enzymes. For breed use cell metabolism - the host, its enzymes and energy.\n3. provide exist unless as intracellular parasites and do non spawn external the cells of the organisms, which atomic number 18 parasitic.\n\nViruses do not capture on maudlin media - they atomic number 18 too crabby to th e highest degree food. unmistak equal to(p) broth, which suits the bulk of bacteria, viruses argon not estimable at each(prenominal). They requisite support cells, and atomic number 18 not both, and rigorously defined. interchangeable an separate(prenominal)wise organisms, viruses are able to reproduce.\n\nViruses concord heredity. transmissible characteristics of viruses faecal matter be accounted for the targeted honk of hosts and driveway unhealthiness symptoms, as wellhead as the specificity of the repellent responses of rude(a) or cardboard hosts protect observational animals.\n\nThe means of these characteristics allows to understandably pick up any inherited properties of the virus, and eventide much - its varieties that brook discipline contagious markers, for manikin: rough neurotropic viruses, and so forth\n\n division is the other location of heredity, and in this think of all other viruses equal organisms that survive our planet. At th e akin virus sewer be seen as the familial discrepancy associated with changes in the contagious amount and phenotypical variant associated with the musing of the resembling genotype in varied conditions.'