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 12
... virus . A virus is called a DNA virus or an RNA virus , according to the kind of nucleic acid that makes up its genome . In either case , the genome is usually organized as a single linear or circular molecule of nucleic acid . The smallest ...
... virus . A virus is called a DNA virus or an RNA virus , according to the kind of nucleic acid that makes up its genome . In either case , the genome is usually organized as a single linear or circular molecule of nucleic acid . The smallest ...
Page 18
... viruses have broad host ranges . West Nile virus , for example , can infect mosquitoes , birds , and humans , and equine encephalitis virus can infect mosquitoes , birds , horses , and humans . Other viruses have host ranges so narrow ...
... viruses have broad host ranges . West Nile virus , for example , can infect mosquitoes , birds , and humans , and equine encephalitis virus can infect mosquitoes , birds , horses , and humans . Other viruses have host ranges so narrow ...
Page 19
... viral infection begins when the genome of a virus makes its way into a host cell ( Figure 18.5 ) . The mechanism by which this nucleic acid enters the cell varies , depending on the type of virus and the type of host cell . For example ...
... viral infection begins when the genome of a virus makes its way into a host cell ( Figure 18.5 ) . The mechanism by which this nucleic acid enters the cell varies , depending on the type of virus and the type of host cell . For example ...
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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