MIC 301 Chapter Notes - Chapter 13: Double-Stranded Rna Viruses, Rna Virus, Viroid
31 Oct 2018
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Chapter 13: characterizing and classifying viruses, viroids, and prions. Cause most of the diseases that still plague the industrialized world (common cold, influenza, herpes, aids) Miniscule, acellular, infectious agent having one or several pieces of nucleic acid as their genome (either dna or rna) Do not have a cytoplasmic membrane, lack cytosol, and lack functional organelles. Aren"t capable of metabolic activity of their own, but rather take control of the cells metabolism to produce more viral nucleic acid and more viral proteins. The virion consists of a protein coat (a capsid) surrounding nucleic acid core. Some virions have a phospholipid membrane called an envelope. The outermost layer (either the capsid or envelope) provides the virus both protection and recognition sites that bind complementary chemicals on the surface of their specific host cells. Once viruses are inside, the intracellular state is initiated. The capsid or envelope, once inside the cell, is removed.
