PPT-Chapter 18 Viruses and Bacteria

Pages 476 495 A Rhinovirus The Flu What is a Virus Nonliving particles that cant reproduce nucleic acids DNA or RNA enclosed in a protein coat Smaller than the smallest bacterium . A . virus. is a small . infectious agent. that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a . microscope. . Viruses infect all types of organisms, from . Invasive Diseases. Infectious Disease. Also known as . Contagious Disease. Communicable Disease. Transmissible Disease. Caused by a pathogen that causes disease. Not all infections cause disease that can be transmitted. 2012. Mrs. Erickson. Science Benchmark. Microorganisms. . are those . living. things that are . visible. as individual organisms only with the . aid of magnification. . Microorganisms are components of . Bacterial Infections. Colonization by harmful bacteria. Using the body as resources to grow and reproduce. Battled by the immune system. Different numbers of bacteria needed to overwhelm the immune system and cause infection. Protists. , Fungi. Chapter 7. Grade 7 Science. Viruses. _____ - a tiny, non-living particle invades and then multiplies inside of a living cell.. Viruses can only multiply when they are _____ of a living cell.. 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. 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 . 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. What are the characteristics of viruses? Bacteria? What kingdom do each of these belong? Are they living? Why or why not. ?. What do you already know?. What are the differences between viruses and bacteria?. Chapters 27 and 19. YOU MUST KNOW. The key ways in which prokaryotes differ from eukaryotes with respect to genome, membrane-bound organelles, size, and reproduction. How horizontal acquisition of genetic information occurs in prokaryotes via transformation, conjugation, and transduction. -It’s not a plant or an animal.. -It’s not a fungi, protist, or bacteria.. WHAT IS A VIRUS?. A virus is an . infectious. agent made up of . nucleic. acid (. DNA. or . RNA. ) wrapped in a . protein. 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. What are the characteristics of viruses? Bacteria? What kingdom do each of these belong? Are they living? Why or why not. ?. Kingdoms. Eukar. What do you already know?. What are the differences between viruses and bacteria?. ANSWERS CAN BE FOUND IN CHAPTER 19 SECTION 2 on VIRUSES (you need to look at the WHOLE SECTION).. HELPFUL START PAGE= 474. Bacteria & Viruses . What’s the difference??. A little review…. A little review….