PPT-VIRAL human disease ,harmful viruses

By DrHesnaa Saeed Al Mossawi DNA VIRUS RNA VIRUS Transmission of viral infection Viruses are transmitted via horizontal common route of transmission person to person and vertical mothertochild transmission routes or . Other . Acellular. Infectious Agents. 1. 6. Copyright © McGraw-Hill Global Education Holdings, LLC. Permission required for reproduction or display.. Acellular. Agents. Viruses . – protein and nucleic acid. Intro to viruses. http://www.brainpop.com/health/diseasesinjuriesandconditions/viruses. /. What is a Virus?. Very small . Non-living particle. Made up of nucleic acid. . and proteins. Can only reproduce by infecting living cells. 21.4 Prokaryotes—Enduring, . Abundant, and Diverse. Prokaryotes. Structurally simple cells that lack a nucleus. Evolved before eukaryotes . Abundance and Metabolic Diversity. Prokaryotes are Earth’s most abundant organisms. VOCABULARY. Virus. Capsid. Envelope. Human . Immunodeficiency Virus (HIV. ). Influenza. Lytic Cycle. Lysogenic Cycle. Lysis. Retrovirus. Prerequisite questions. What are the eight characteristics which all living things have in common. epitopes. and human . epitopes. . Shay Sade. Eldad. . Mataraso. Project advisor: Prof. . Yoram. . Louzoun. Final Project . About 98% of thymocytes die during the development . processes in the thymus by failing either . Where are cases of viral hemorrhagic fever found Taken together the viruses that cause VHFs are distributed over much of the globe However because each virus is associated with one or more particular Viruses consist of a nucleic acid (either DNA or RNA) associated with proteins encoded by the nucleic acid. The virus may also have a lipid . bilayer. membrane (or envelope) but this is acquired from the host cell, usually by budding through a host cell membrane. If a membrane is present, it must contain one or more viral proteins to act as . arboviruses. ) are viruses that can be transmitted to man by arthropod vectors. . Arboviruses. belong to three families:. Togaviruses. . Bunyaviruses. e.g. . Sandfly. Fever. .. Flaviviruses. e.g. Yellow Fever, dengue, Japanese Encephalitis. . PATHOGENESIS. The. . study. . of. . viral. . pathogenesis elucidates. . this. . special. . relationship. . between. . the. . virus. . and. . the intact. . host.. . The. . term. . As a group discuss for 1 minute. Be able to defend your answer for the class!. Are . VIRUSES. alive?. Growth and Development. Reproduce. Change Over Time. Obtain and Use Energy. Maintain Homeostasis. Introduction:. Viral infections of plants can cause necrosis, hypoplasia . or . hyperplasia and these effects can lead to symptoms such as. Growth retardation . Distortion. Mosaic patterning of leaves. 3rd. Lecture . Generalized Structure of Viruses. Viral components. Nucleic acids. Capsid. Envelope. Glycoprotein. Basic virus structure. Capsid protein. Nucleocapsid. Naked capsid virus. DNA. RNA. or. What is the viruses. Structure/classification of the viruses. Replication of the viruses. Out come of the viral infection . History. Through the 1800s, many scientists discovered that something smaller than bacteria could cause disease and they called it . Dr.Luma. . amer. Viral genetics. Viruses are simple . creatures, . lacking an . energy-generating system . and having very limited . biosynthetic capabilities. . The smallest viruses have only a . few genes.