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 61
... spread around the world . In this case , technological and social factors , including affordable international travel , blood transfusions , sexual promiscuity , and the abuse of intravenous drugs , allowed a previously rare human ...
... spread around the world . In this case , technological and social factors , including affordable international travel , blood transfusions , sexual promiscuity , and the abuse of intravenous drugs , allowed a previously rare human ...
Page 62
... spread to new host species , or disseminate more widely in the current host species . Changes in host behavior or environmental changes can increase the viral traffic responsible for emerging diseases . For example , new roads through ...
... spread to new host species , or disseminate more widely in the current host species . Changes in host behavior or environmental changes can increase the viral traffic responsible for emerging diseases . For example , new roads through ...
Page 65
Neil A. Campbell, Jane B. Reece. Plant viral diseases spread by two major routes . In the first route , called horizontal transmission , a plant is infected from an external source of the virus . Because the invading virus must get past ...
Neil A. Campbell, Jane B. Reece. Plant viral diseases spread by two major routes . In the first route , called horizontal transmission , a plant is infected from an external source of the virus . Because the invading virus must get past ...
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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