Biology, Pages 334-346Neil Campbell and Jane Reece's BIOLOGY remains unsurpassed as the most successful majors biology textbook in the world. This text has invited more than 4 million students into the study of this dynamic and essential discipline. |
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Page 14
... appear in the four examples shown here . ( All the micrographs are colorized TEMs . ) Some viruses have accessory structures that help them infect their hosts . For instance , a membranous envelope surrounds the capsids of influenza ...
... appear in the four examples shown here . ( All the micrographs are colorized TEMs . ) Some viruses have accessory structures that help them infect their hosts . For instance , a membranous envelope surrounds the capsids of influenza ...
Page 68
... appear to cause a number of degenerative brain diseases in various animal species . These diseases include scrapie in sheep ; mad cow disease , which has plagued the European beef industry in recent years ; and Creutzfeldt - Jakob ...
... appear to cause a number of degenerative brain diseases in various animal species . These diseases include scrapie in sheep ; mad cow disease , which has plagued the European beef industry in recent years ; and Creutzfeldt - Jakob ...
Page 69
... appear is around ten years . Second , prions are virtually indestructible ; they are not destroyed or deactivated by heating to normal cooking temperatures . To date , there is no known cure for prion diseases , and the only hope for ...
... appear is around ten years . Second , prions are virtually indestructible ; they are not destroyed or deactivated by heating to normal cooking temperatures . To date , there is no known cure for prion diseases , and the only hope for ...
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animal viruses bacterial cell bacterial chromosome bacteriophage bacterium bind to specific capsid cause disease cellular enzymes circular coli cell Cycles of Phages DNA molecule double-stranded emerging viruses enter the host enveloped viruses eukaryotes existing viruses Figure genetic recombination glycoproteins herpesvirus host cell host range host species human disease immune system kill the host lysogenic cycle lytic cycle mechanisms membranous envelope microbes model systems mosaic virus TMV mRNA mutation natural selection favors nucleic acid obligate intracellular parasites particles phage DNA plant to plant plant viruses plasmids plasmodesmata polymerase prions prokaryotic prophage genes protein coat provirus restriction enzymes retrovirus reverse transcriptase RNA viruses Scientists simplest spread stranded RNA symptoms syndrome synthesis temperate phage template tobacco mosaic virus transcribed transposons type of virus vaccines vertical transmission viral diseases viral DNA viral envelope viral genome viral infection viral nucleic acid viral proteins viral reproductive cycle viroids virulent phage viruses and bacteria viruses cause