Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 2

The replication of animal viruses differs from the replication of bacteriophages in what way?
(a) Once in the host cell, animal viruses undergo a process of "uncoating" whereby the viral genome is separated from its protein coat by proteolytic enzymes; the viral genome in a bacteriophage is ready to go once injected into the bacterial host cell.
(b) Compared to bacteriophage replication, synthesis in animal virus replication can take much longer.
(c) In the penetration stage, bacteriophages produce lysozyme to weaken the bacterial cell wall and inject their DNA through the tail core into the bacterial cell, where as animal viruses either fuse their envelope with the host's plasma membrane or enter by endocytosis.
(d) The maturation stage in animal enveloped viruses is longer than that of bacteriophage replication.
(e) All of the above are ways in which animal viruses differ from bacteriophage replication.