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 5
Neil A. Campbell, Jane B. Reece. eukaryotes , such as plants and animals . Viruses are smaller and simpler still ( Figure 18.2 ) . Lacking the structures and metabolic machinery found in cells , most viruses are little more than genes ...
Neil A. Campbell, Jane B. Reece. eukaryotes , such as plants and animals . Viruses are smaller and simpler still ( Figure 18.2 ) . Lacking the structures and metabolic machinery found in cells , most viruses are little more than genes ...
Page 47
... eukaryotic cells serving as their hosts . The origin of viruses is still a topic of much debate . Perhaps the earliest viruses were naked bits of nucleic acid that made it from one cell to another via injured cell surfaces . The ...
... eukaryotic cells serving as their hosts . The origin of viruses is still a topic of much debate . Perhaps the earliest viruses were naked bits of nucleic acid that made it from one cell to another via injured cell surfaces . The ...
Page 74
... of protein . Although we will refer to this structure as the bacterial chromosome , it is very different from eukaryotic chromosomes , which have linear DNA molecules associated with a large amount of protein . In 74.
... of protein . Although we will refer to this structure as the bacterial chromosome , it is very different from eukaryotic chromosomes , which have linear DNA molecules associated with a large amount of protein . In 74.
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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