BIOL 1001 Chapter : Chapter 1 Notes Bio
Document Summary
With little attention paid to their important role in evolution. Viruses exist in a gray area between the living and nonliving. Viruses are genetic information that is encased by a protein chip. Viruses have own version on rna or dna. Research on viruses has focused on how they take over cells or cause disease. Viruses are active agents of evolution and often exchange genetic information with their host. Viruses add their genes to their host cells. Virus population, intimate relationships with host cells, and fast rate of replication make them a potent source of genetic innovation. Viruses are now studied within the web of life. Dna makes rna and rna makes proteins transfer new genes to the host cell: a rapidly evolving virus has a high mutation rate (such as the flu, viruses have had strong impact on human history. Atom is the smallest particle of a cell. Tissues combine to form organs, which is united as an organ system.
