PPT-The RNA Viruses That Infect Humans

1 2 RNA Viruses Diverse group of microbes Assigned to one of 12 families based on envelope capsid and nature of RNA genome 3 Enveloped Segmented SingleStranded RNA Viruses Orthomyxoviruses. Chapters 12 and 13. Viral Characteristics and Structure. Why Viruses aren’t Alive. General Characteristics of Viruses. Name derives from the Latin for “poison”. Obligatory intracellular parasites. What is a Virus?. Very small . Non-living particle. Made up of nucleic acid. . and proteins. Can only reproduce by infecting living cells. Do not carry out respiration, grow or develop. Structure. Viruses have an inner core which contains either RNA or DNA. CLS 212: Medical Microbiology. History. Through the 1800s, many scientists discovered that something smaller than bacteria could cause disease and they called it . virion. (. Latin word- poison. ).. Presentation. Presentation Topic. . Virus. Group Member. Mohsin. Adnan. Sajjad. Asad. Arsalan. What is Computer Virus?. Computer Virus is man made software that is designed to spread from one computer to another.. Chapter 18. Are Viruses Alive?. 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. Viruses . A nonliving (?) particle made of proteins, nucleic acids, and sometimes lipids (fats). Viruses only reproduce by infecting living cells. Most viruses can only be seen with an electron microscope. Pages 476 - 495. A Rhinovirus . The Flu. What is a Virus??. Non-living particles that can’t reproduce. nucleic . acids . (DNA or RNA) . enclosed . in a protein coat . Smaller than the smallest bacterium . EQ: Why are viruses considered to be non-
living?. Characteristics:. *Nonliving particles made of . nucleic acid. and a . protein coat . enlosed in a . capsid. shell... *In order to reproduce, all viruses must have a . © 2017 Pearson Education, Inc.. Introduction. A . virus . is an obligate, intracellular parasite . Viruses enter a . host. . cell. and use the host’. s biosynthetic machinery to reproduce and synthesize its proteins. Quickwrite! . . . Based on what you remember about viruses and cells from IPC:. Differences between the two? . Similarities? . Examples of each?. Be prepared to share.. QuickShare!. Discuss what you wrote with your table partner. . Size of genome. Segmented or not. Site of replication.  . FAMILIES of NEGATIVE STRAND VIRUSES.  . NON-SEGMENTED (-)STRAND VIRUSES. .  . RHABDOVIRIDAE. Rabies, VSV, & Plant viruses .  . FILOVIRIDAE. 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. 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. Page 63/64. Date. : . 2-6-2017. Title: . Viral Structure. Essential Question: . How does the structure of a virus compare to a cell?. YES - Cornell notes, please!. Content Objective. BIO.4C. The student will:.