MIC 205A Lecture Notes - Lecture 13: Lytic Cycle, Intracellular Parasite, Lysogen
Document Summary
Microbiology chapter 13: viruses, viroid, and prions: viruses can be viewed as genetic material (rna,dna) contained within a protective protein coat. They are inert particles, incapable of metabolism, replication or motility. 13. 1 general characteristics of viruses: they are extremely small, 100- to 1,000- fold smaller than the host they infect, smallest viruses are about 10nm, because they are dependent on host cells, viruses are classified as obligate intracellular parasites. Viral taxonomy: the international committee on viral taxonomy keeps an online database of key features, classification and nomenclature of recognized viruses. Genome entry: following attachment, a bacteriophage injects its genome into the cell, the phage is injected into the dna through the host"s (cid:272)ell (cid:449)all a(cid:374)d (cid:373)e(cid:373)(cid:271)ra(cid:374)e. Synthesis of phage proteins and genome: within minutes of the t4 dna being injected into a host cell, some of the genes on that.