PPT-Virus structure Lecture Two

2 nd stage Viruses have genome either DNA or RNA which is doublestranded ds or singlestranded ss Virions can be categorized into four groups according to their structure icosahedral enveloped naked and helical enveloped naked. Intro to IT. . COSC1078 Introduction to Information Technology. . Lecture 22. Internet Security. James Harland. james.harland@rmit.edu.au. Lecture 20: Internet. Intro to IT. . Introduction to IT. Malicious Software. modified from slides of . Lawrie. Brown. Malware. [NIST05] defines malware as:. “a program that is inserted into a system, usually covertly, with the intent of compromising the . Rachel Simpson. ADSHE Conference June 2013. POSSIBLE CAUSES. Gaps in Knowledge. Poor teaching in previous institution. Insufficient application on previous courses. Illnesses or absences from school/college. 7: . Chemical bonding. Lecture . 7 . Topics Brown, chapter 8. Basic . bonding background . information 8.1. Types of chemical bonds. Valence electrons & Lewis structures. The ‘Octet rule’ . Lecture . 4: Malware. CS3235 Lecture 4. 1. Review of Lecture 3. AES. Public-key cryptosystem: RSA. Application of cryptography. Cryptographic hash functions. Key exchange. Digital signatures. Certificates. modified from slides of . Lawrie. Brown. Malware. [NIST05] defines malware as:. “a program that is inserted into a system, usually covertly, with the intent of compromising the . confidentiality. , . E. . Mozhaitsev. . 1. *, E. . . Suslov. 1. , D. . Rastrepaeva. 1. ,3. , D. Korchagina. 1. , N. Bormotov. 2. , O. Yarovaya. 1, 3. , O. Serova. 2. , A. Agafonov. 2. , R. Maksyutov. 2. , L. Shishkina. Viruses are not alive. A virus in an obligate intracellular parasite. Requires host cell to reproduce. Can be seen at magnifications provided by the electron microscope (they are microscopic). Characteristics of Viruses. Carcinogenesis. Carcinogenesis or . Oncogenesis. =. creation of cancer= normal cells are transformed into cancer cells= characterized by . a progression of changes on cellular and genetic level . that ultimately reprogram a cell to undergo uncontrolled cell division, thus forming a malignant mass.. By: Maddy Connell, Ava . Taurino. , and Shane Landue. Overview .  What is a virus?.  Structures of viruses.  How viruses reproduce.  Cells infected by viruses.  Diseases caused by RNA viruses.  The Lytic Cycle. . Outside . their host cells, viruses survive as . virus particles. , also known as . virions. . The . virion. is a . gene delivery . system; it contains the virus genome, and . its functions . are to protect the genome and to aid its . Dept. of Biology, 2. nd. year, 2020. Mustansiriyah. University. References:. Virology: principles and applications, John Carter and Venetia Saunders, 2013.. Principles of Molecular Virology, Alan, J. . Topics. Week l:. -Introduction and General characters of viruses. . (History ,definition, and importance of study). . Viral . structure. Virus . structure and morphology. composition . KAVITA BASUMATARY. ASSISTANT PROFESSOR. DEPARTMENT OF BOTANY . GOALPARA COLLEGE. Structure of Virus:. The . CaMV. genome consists of circular, double-stranded DNA approximately 8000 bp in length.. The genome contains three discontinuities typical of .