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 7
... plant to plant by rubbing sap extracted from diseased leaves onto healthy plants . After 335 an unsuccessful search for an infectious microbe in the sap , Mayer concluded that the disease was caused by unusually small bacteria that ...
... plant to plant by rubbing sap extracted from diseased leaves onto healthy plants . After 335 an unsuccessful search for an infectious microbe in the sap , Mayer concluded that the disease was caused by unusually small bacteria that ...
Page 9
... plants , continuing this process through a series of infections . The pathogen must have been reproducing , for its ability to cause disease was undiluted after several transfers from plant to plant . In fact , the pathogen reproduced ...
... plants , continuing this process through a series of infections . The pathogen must have been reproducing , for its ability to cause disease was undiluted after several transfers from plant to plant . In fact , the pathogen reproduced ...
Page 65
... plant's outer protective layer of cells ( the epidermis ) , the plant becomes more susceptible to viral infections if it has been damaged by wind , injury , or insects . Insects pose a double threat , because they can also act as ...
... plant's outer protective layer of cells ( the epidermis ) , the plant becomes more susceptible to viral infections if it has been damaged by wind , injury , or insects . Insects pose a double threat , because they can also act as ...
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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