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 30
... depend . Figure 18.7 The lytic and lysogenic cycles of phage λ , a temperate phage . After entering the bacterial cell and circularizing , the λ DNA can immediately initiate the production of a large number of progeny phages ( lytic ...
... depend . Figure 18.7 The lytic and lysogenic cycles of phage λ , a temperate phage . After entering the bacterial cell and circularizing , the λ DNA can immediately initiate the production of a large number of progeny phages ( lytic ...
Page 45
... obligate intracellular parasites that cannot reproduce independently , their use of the genetic code makes it hard to deny their evolutionary connection to the living world . How did viruses originate ? Because they depend on cells 45.
... obligate intracellular parasites that cannot reproduce independently , their use of the genetic code makes it hard to deny their evolutionary connection to the living world . How did viruses originate ? Because they depend on cells 45.
Page 46
... depend on cells for their own propagation , viruses most likely are not the descendants of precellular forms of life , but evolved after the first cells appeared , possibly multiple times . Most molecular biologists favor the hypothesis ...
... depend on cells for their own propagation , viruses most likely are not the descendants of precellular forms of life , but evolved after the first cells appeared , possibly multiple times . Most molecular biologists favor the hypothesis ...
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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