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Unit 3 Lesson 8

What is a Virus

TermDefinition
capsid a protein coat surrounding the genetic material of a virus
evolution a change in the genetic makeup of a species over time
mutation a change in the sequence of the nitrogen bases making up the genetic material
viral envelope a membrane layer surrounding a virus that is made form the cell membrane of the host cell
virus an organism consisting of only nucleic acid and protein that uses other cells in order to replicate and make more viruses
lysogenic cycle the viral genetic material incorporates itself into the host cell's genome and gets replicated whenever the host cell replicates itself
lytic cycle the virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell breaking the membrane of the host cell, killing it
provirus DNA from a virus that is incorporated into the host cell's DNA
pathogen something that causes disease
retrovirus a special virus that copies RNA back into DNA
Created by: atrang
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