PPT-Part 1 and 2 : Viruses What is DNA again?

DNA is a molecule in your cells nuclei that can be used as instructions by your cells to make new cells and pigments for your hair and skin What is DNA again The DNA instructions are really a pattern of 4 different chemicals read as a code by the cells nucleus. On the road again goin places th at Ive never been Seein things that I may never see again and I cant w it to get on the road again On the road again like a band of gypsies w go dow the highw ay Were the best of friends insisting that the w d be tur copyright cmassengale. 2. Are Viruses Living or Non-living?. Viruses are both and neither. They have . some properties of life but not others. For example, viruses can be killed, even crystallized like table salt. HIV infected T-cell. Viral Structure. not . cells. small . infectious particles . w/. DNA or RNA enclosed . in a protein coat . (capsid). in . some cases. , a membranous envelope. Viral Genomes. genomes . Viruses Are Not Cells!. There are several structural and functional differences between cells and viruses. The structural differences include:. No nucleus. No cell membrane. No organelles. The functional differences include:. 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. STRUCTURE. A core nucleic acid - DNA or RNA. Nucleic Acid surrounded by a protein, called a capsid.. CLASSIFICATION. By genomes: DNA viruses, RNA viruses or retroviruses . (any . of a group of RNA viruses that insert a DNA copy of their genome into the . What do viruses need to reproduce?. Other viruses. Host organisms. A nutrient medium. An enzyme solution. Which characteristic do viruses possess in common with living cells?. They contain a nucleus and organelles.. . Copyright © Houghton Mifflin Harcourt Publishing Company. Unit 2. . Lesson 1 . Archaea, Bacteria, and Viruses. Sized Extra-Small. Copyright © Houghton Mifflin Harcourt Publishing Company. All living things are either prokaryotes or eukaryotes.. 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. -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. . . The process of transfer of virus into host is referred as . TRANSMISSION. and this is an important step in the life cycle of viruses.. Person to person infections are said to be . HORIZONTAL. . 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. Lec. : 4. Non-enveloped DNA Viruses. Non-enveloped . viruses are surrounded by a protein coating, commonly referred to as a capsid. The capsid does the job of attaching to host cells. .. Non-enveloped .