BIO SCI 45 Lecture Notes - Lecture 4: Viral Envelope, Intracellular Parasite, Anal Sex
Document Summary
Genetic material: viruses carry genetic material in the form of nucleic acids (dna or rna), which specify virus proteins. Proteins may make up the virus particles, enzymes that help carry out biochemical processes for virus growth, or regulatory proteins: b. Packaging and delivering components: naked dna or rna is fragile; viruses use protein coat to surround the viral genome. Some viruses also have a viral envelope that surrounds the genetic information and protein coat. Viral envelopes resemble the membranes that make up the outer surfaces of our cells but contain proteins that are virus specified: viruses are dependent on cell energy and machinery, a. Energy metabolism energy is required for most biomechanical processes; viruses do not have machinery for generating energy: they rely on machinery from the cells they infect: b. Protein synthesis proteins are synthesized in cells by a complex machinery, using instructions from genetic material: viruses carry genetic instructions but not protein synthesis machinery.