Viruses - Chap 13 partI
... o Single or several types of protein - protein subunits (protomers) that are formed into larger assemblies or structural subunits called capsomers. Information necessary for proper folding and aggregation is contained within the structure of the proteins so that they are capable of self-assembly o n ...
... o Single or several types of protein - protein subunits (protomers) that are formed into larger assemblies or structural subunits called capsomers. Information necessary for proper folding and aggregation is contained within the structure of the proteins so that they are capable of self-assembly o n ...
Contagion Worksheet
... 2. What U.S. government agency tracks diseases here in the U.S. (and monitors world diseases as well)? ...
... 2. What U.S. government agency tracks diseases here in the U.S. (and monitors world diseases as well)? ...
Viruses - Killeen ISD
... • Structure that contains genetic material (DNA or RNA) wrapped in protein • Does NOT have a cell • Does NOT breathe, eat, produce wastes • Can reproduce, but only if in a host cell ...
... • Structure that contains genetic material (DNA or RNA) wrapped in protein • Does NOT have a cell • Does NOT breathe, eat, produce wastes • Can reproduce, but only if in a host cell ...
Virus and Bacteria Worksheet
... Curable(not), Vaccines(no), Antibiotics useful(no), Is(is not) an organism, Can(can’t) be spread from person to person, (not) found in humans and animals, Deadly(not), Living(not), contains DNA(doesn’t) VIRUS ...
... Curable(not), Vaccines(no), Antibiotics useful(no), Is(is not) an organism, Can(can’t) be spread from person to person, (not) found in humans and animals, Deadly(not), Living(not), contains DNA(doesn’t) VIRUS ...
Viruses
... • Intracelullar obligate parasites +/• They have no ribosoms or energetic metabolism either • They have no binar division • They have a genom (RNA or DNA) + • They are affected by biological evolution + • They interact with living organisms +/- ...
... • Intracelullar obligate parasites +/• They have no ribosoms or energetic metabolism either • They have no binar division • They have a genom (RNA or DNA) + • They are affected by biological evolution + • They interact with living organisms +/- ...
Test Date - Humble ISD
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a __________________ from one bacteria to another via ________________. Transformation – Direct uptake of DNA from surroundings Transduction – Use of viral ________________________ t ...
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a __________________ from one bacteria to another via ________________. Transformation – Direct uptake of DNA from surroundings Transduction – Use of viral ________________________ t ...
Characteristics
... A Virus attaches to the host and injects its DNA into the cell. B The viral DNA attaches to the host DNA. C DNA replication takes place (Interphase) D The cell undergoes mitosis E Stress causes the viral DNA to create the “weird” protein thus creating an outbreak! ...
... A Virus attaches to the host and injects its DNA into the cell. B The viral DNA attaches to the host DNA. C DNA replication takes place (Interphase) D The cell undergoes mitosis E Stress causes the viral DNA to create the “weird” protein thus creating an outbreak! ...
Viruses Lecture 16 Fall 2008
... – RNA viruses have very high mutation rate – copy errors are not corrected by proofreading • Dissemination from small isolated human populations • Virus spreads from other animals to human population – “Spanish flu” pandemic of 1918 • 40 million people died ...
... – RNA viruses have very high mutation rate – copy errors are not corrected by proofreading • Dissemination from small isolated human populations • Virus spreads from other animals to human population – “Spanish flu” pandemic of 1918 • 40 million people died ...
Viruses
... • Capsid- protein coat that encloses the genetic material. • Envelope- a membrane surrounding the capsid. • Bacteriophages- viruses that infect bacteria and have complicated structures. ...
... • Capsid- protein coat that encloses the genetic material. • Envelope- a membrane surrounding the capsid. • Bacteriophages- viruses that infect bacteria and have complicated structures. ...
Answers to Mastering Concepts Questions
... are assembled inside cells (much as cars are assembled in a factory). Viruses do not increase in size or develop. 2. If a virus can attach to a cell and penetrate it, the virus can infect a cell. Generally viruses can only enter cells in which they can reproduce. 3. A virus’s genetic material enters ...
... are assembled inside cells (much as cars are assembled in a factory). Viruses do not increase in size or develop. 2. If a virus can attach to a cell and penetrate it, the virus can infect a cell. Generally viruses can only enter cells in which they can reproduce. 3. A virus’s genetic material enters ...
Contributions/Accomplishments
... - viruses contain either DNA or RNA but not both of them. Living cells have both of them. These nucleic acids can either double stranded or single stranded. (Next lecture we will learn about DNA and RNA and how living cells use them.) The Membrane Envelope (if present) - some viruses have a fatty (l ...
... - viruses contain either DNA or RNA but not both of them. Living cells have both of them. These nucleic acids can either double stranded or single stranded. (Next lecture we will learn about DNA and RNA and how living cells use them.) The Membrane Envelope (if present) - some viruses have a fatty (l ...
6 Viruses and Other Acellular Infectious Agents
... A. Viruses are acellular infectious agents that cannot reproduce outside of living cells; virology is the study of viruses B. Viruses can infect all types of cells but are specific for certain organisms; bacteriophages (phages) infect bacteria II. Virion Structure A. Virion size—ranges from 10 nm to ...
... A. Viruses are acellular infectious agents that cannot reproduce outside of living cells; virology is the study of viruses B. Viruses can infect all types of cells but are specific for certain organisms; bacteriophages (phages) infect bacteria II. Virion Structure A. Virion size—ranges from 10 nm to ...
2. Kingdoms & Intro to Virus
... Receptor sites: •spikes that help virus attach to its specific host cell ...
... Receptor sites: •spikes that help virus attach to its specific host cell ...
Viruses
... *They consist of a nucleic acid covered w/ a protein coat, sometimes those are covered by a membranous envelope Basic Viral Genomic Info. * Many different kinds * Double or single-stranded DNA * Double or single-stranded RNA * Anywhere from 4-100 genes Capsids & Envelopes * Capsid- Protein shell * R ...
... *They consist of a nucleic acid covered w/ a protein coat, sometimes those are covered by a membranous envelope Basic Viral Genomic Info. * Many different kinds * Double or single-stranded DNA * Double or single-stranded RNA * Anywhere from 4-100 genes Capsids & Envelopes * Capsid- Protein shell * R ...
viruses and bacteria
... 1. _________________ All viruses look alike 2. _________________ Bacteria are unicellular 3. _________________ Bacteria have cell walls 4. _________________ Bacteria have a nucleus 5. _________________ Every virus contains DNA or RNA 6. _________________ A virus can replicate on its own Answer the ...
... 1. _________________ All viruses look alike 2. _________________ Bacteria are unicellular 3. _________________ Bacteria have cell walls 4. _________________ Bacteria have a nucleus 5. _________________ Every virus contains DNA or RNA 6. _________________ A virus can replicate on its own Answer the ...
Viruses - Humble ISD
... There are three initial steps that are common to all viral infections: 1. Virus _____________ to the cell ____________________ of the host cell 2. Trick cell into allowing it inside 3. Virus releases its __________________________ (DNA or RNA) into the host cell - ____________________ – Viral DNA is ...
... There are three initial steps that are common to all viral infections: 1. Virus _____________ to the cell ____________________ of the host cell 2. Trick cell into allowing it inside 3. Virus releases its __________________________ (DNA or RNA) into the host cell - ____________________ – Viral DNA is ...
Kingdom: Viruses
... •The proteins on the outside of the virus allow it to attach to proteins on our cell membranes. Once attached, the virus is able to release its RNA into our cells to take control of ribosomes and make copies of itself. ...
... •The proteins on the outside of the virus allow it to attach to proteins on our cell membranes. Once attached, the virus is able to release its RNA into our cells to take control of ribosomes and make copies of itself. ...
Viral Disease - School Portal
... and no metabolism of their own), and are very small compared to bacteria. They can be crystallised like a chemical, and stored. Viruses consist of a strand of nucleic acid (DNA or RNA) surrounded by a protein sheath called a capsid, built of many identical capsomeres (they have very few genes, so th ...
... and no metabolism of their own), and are very small compared to bacteria. They can be crystallised like a chemical, and stored. Viruses consist of a strand of nucleic acid (DNA or RNA) surrounded by a protein sheath called a capsid, built of many identical capsomeres (they have very few genes, so th ...
DIVERSITY OF LIVING THINGS
... 5) What is a nanometer? 6) How big are viruses? 7) What does a virus consist of? 8) What percent of a virus is made up of the capsid? 9) what does a capsid give the virus? 10) What are Bacteriophages? 11) What do they look like? 12) What special relationship do viruses have with their hosts? 13) wha ...
... 5) What is a nanometer? 6) How big are viruses? 7) What does a virus consist of? 8) What percent of a virus is made up of the capsid? 9) what does a capsid give the virus? 10) What are Bacteriophages? 11) What do they look like? 12) What special relationship do viruses have with their hosts? 13) wha ...
ACADEMIC BIOLOGY: READING GUIDE for Ch
... _______________, ______ _________________, and ____________ to make copies of viral genes that ...
... _______________, ______ _________________, and ____________ to make copies of viral genes that ...
Viruses Virus • Microscopic particle that invades and
... Classifying Viruses All viruses contain nucleic acid (either DNA or RNA) surrounded by a protein coat Classified by shape o Crystals o Spheres o Cylinders o Spacecraft Cycles of viruses Lysogenic Cycle – the virus goes into a host cell but remains inactive; when the host cell divides, copies o ...
... Classifying Viruses All viruses contain nucleic acid (either DNA or RNA) surrounded by a protein coat Classified by shape o Crystals o Spheres o Cylinders o Spacecraft Cycles of viruses Lysogenic Cycle – the virus goes into a host cell but remains inactive; when the host cell divides, copies o ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 8. Sex Pili participate in the transfer of DNA from one bacterium to another. 9. Rubella virus grows well in chorioallantoic membrane of the embryonated eggs. 10. Animal virus has receptor sites that attach to the attachment sites on the host cell surface. III Complete the following: (5 x 1 = 5) 11. ...
... 8. Sex Pili participate in the transfer of DNA from one bacterium to another. 9. Rubella virus grows well in chorioallantoic membrane of the embryonated eggs. 10. Animal virus has receptor sites that attach to the attachment sites on the host cell surface. III Complete the following: (5 x 1 = 5) 11. ...
Viruses
... • 1) Know the difference between viruses and bacteria. • 2) Know the different ways that bacteria and viruses attack the body. ...
... • 1) Know the difference between viruses and bacteria. • 2) Know the different ways that bacteria and viruses attack the body. ...
26 microbial genetics
... 2. Transduction: transfer of bacterial DNA incident to viral infection. - could be generalized (host DNA accidentally, randomly packaged in capsid) - could be specialized (takes genes adjacent to a viral insertion site). ...
... 2. Transduction: transfer of bacterial DNA incident to viral infection. - could be generalized (host DNA accidentally, randomly packaged in capsid) - could be specialized (takes genes adjacent to a viral insertion site). ...
Section 19–2 Viruses
... 8. Why are most viruses highly specific to the cells they infect? Viruses must bind precisely to proteins on the cell surface and then use a host’s genetic system. ...
... 8. Why are most viruses highly specific to the cells they infect? Viruses must bind precisely to proteins on the cell surface and then use a host’s genetic system. ...
Virus
A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants, and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898, about 5,000 virus species have been described in detail, although there are millions of different types. Viruses are found in almost every ecosystem on Earth and are the most abundant type of biological entity. The study of viruses is known as virology, a sub-speciality of microbiology.While not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles. These viral particles, also known as virions, consist of two or three parts: (i) the genetic material made from either DNA or RNA, long molecules that carry genetic information; (ii) a protein coat, called the capsid, which surrounds and protects the genetic material; and in some cases (iii) an envelope of lipids that surrounds the protein coat when they are outside a cell. The shapes of these virus particles range from simple helical and icosahedral forms for some virus species to more complex structures for others. Most virus species have virions that are too small to be seen with an optical microscope. The average virion is about one one-hundredth the size of the average bacterium.The origins of viruses in the evolutionary history of life are unclear: some may have evolved from plasmids—pieces of DNA that can move between cells—while others may have evolved from bacteria. In evolution, viruses are an important means of horizontal gene transfer, which increases genetic diversity. Viruses are considered by some to be a life form, because they carry genetic material, reproduce, and evolve through natural selection. However they lack key characteristics (such as cell structure) that are generally considered necessary to count as life. Because they possess some but not all such qualities, viruses have been described as ""organisms at the edge of life"".Viruses spread in many ways; viruses in plants are often transmitted from plant to plant by insects that feed on plant sap, such as aphids; viruses in animals can be carried by blood-sucking insects. These disease-bearing organisms are known as vectors. Influenza viruses are spread by coughing and sneezing. Norovirus and rotavirus, common causes of viral gastroenteritis, are transmitted by the faecal–oral route and are passed from person to person by contact, entering the body in food or water. HIV is one of several viruses transmitted through sexual contact and by exposure to infected blood. The range of host cells that a virus can infect is called its ""host range"". This can be narrow, meaning a virus is capable of infecting few species, or broad, meaning it is capable of infecting many.Viral infections in animals provoke an immune response that usually eliminates the infecting virus. Immune responses can also be produced by vaccines, which confer an artificially acquired immunity to the specific viral infection. However, some viruses including those that cause AIDS and viral hepatitis evade these immune responses and result in chronic infections. Antibiotics have no effect on viruses, but several antiviral drugs have been developed.