Clinical Virology: Part Two The Viruses
... • Derive name from mode of transmission (arthropod born) • Humans are dead-end hosts • Families ...
... • Derive name from mode of transmission (arthropod born) • Humans are dead-end hosts • Families ...
MIB 311 - Fountain University, Osogbo
... Objectives of the course • provide students with a good understanding of viruses and their - structures - classification systems - replication strategies - non-living status ...
... Objectives of the course • provide students with a good understanding of viruses and their - structures - classification systems - replication strategies - non-living status ...
Essential knowledge 3.C.3:
... RNA viruses lack replication error-checking mechanisms, and thus have higher rates of mutation. ...
... RNA viruses lack replication error-checking mechanisms, and thus have higher rates of mutation. ...
Bacteria vs. Virus KWL and Article
... Streptococcus pneumoniae (Strep Throat, Meningitis, and Pneumonia) ...
... Streptococcus pneumoniae (Strep Throat, Meningitis, and Pneumonia) ...
Overview of Viruses - Food Science and Human Nutrition
... – Unknown exactly how animal viruses mature – It is believed that host cells assist with capsid formation around the nucleic acid ...
... – Unknown exactly how animal viruses mature – It is believed that host cells assist with capsid formation around the nucleic acid ...
Foundations in Microbiology
... Persistent Human Viruses • All members show latency and cause recurrent infection; viral DNA forms episome • Clinical complications of latency and recurrent infections become more severe with advancing age, cancer chemotherapy, or other conditions that compromise the immune defenses • Common and ser ...
... Persistent Human Viruses • All members show latency and cause recurrent infection; viral DNA forms episome • Clinical complications of latency and recurrent infections become more severe with advancing age, cancer chemotherapy, or other conditions that compromise the immune defenses • Common and ser ...
Viruses and Bacteria - Welcome to Mrs. Palmiter's World of
... Compare types of Prokaryotes Explain the characteristics and adaptations of bacteria Evaluation the economic importance of bacteria ...
... Compare types of Prokaryotes Explain the characteristics and adaptations of bacteria Evaluation the economic importance of bacteria ...
File
... viruses are formed, and the cell is broken open and destroyed, releasing the viruses. In the lysogenic cycle, the viral genome replicates without destroying the host cell. A provirus is the viral gene that has been inserted into the host chromosome during the lysogenic cycle. A pathogen is any agent ...
... viruses are formed, and the cell is broken open and destroyed, releasing the viruses. In the lysogenic cycle, the viral genome replicates without destroying the host cell. A provirus is the viral gene that has been inserted into the host chromosome during the lysogenic cycle. A pathogen is any agent ...
Plant Viruses - rci.rutgers.edu
... different hosts • No “rules” about virus families that may or may not be present in a given kingdom • Some types of viruses are found more commonly in some kingdoms than in others – Many plant viruses contain ssRNA genomes – Many fungal viruses contain dsRNA genomes – Many bacterial viruses contain ...
... different hosts • No “rules” about virus families that may or may not be present in a given kingdom • Some types of viruses are found more commonly in some kingdoms than in others – Many plant viruses contain ssRNA genomes – Many fungal viruses contain dsRNA genomes – Many bacterial viruses contain ...
Ch.19 Bacteria Viruses
... Plants need N to make _______________, the building blocks of ____________. About 78% of the atmosphere is N2 gas but plants can not use it directly. Certain bacteria, Rhizobium, convert N2 into usable __________________ Legumes: Rhizobium bacteria live in ______________________________________ Ex. ...
... Plants need N to make _______________, the building blocks of ____________. About 78% of the atmosphere is N2 gas but plants can not use it directly. Certain bacteria, Rhizobium, convert N2 into usable __________________ Legumes: Rhizobium bacteria live in ______________________________________ Ex. ...
Paracytology and virology 2nd stage Germs: Viruses, Bacteria, and
... cause disease. Included in this category are certain viruses, bacteria, and fungi. What is the difference between these three types of microbes? Which ones cause which diseases, and should they be treated differently? Because viruses, bacteria, and fungi cause many well-known diseases, it is common ...
... cause disease. Included in this category are certain viruses, bacteria, and fungi. What is the difference between these three types of microbes? Which ones cause which diseases, and should they be treated differently? Because viruses, bacteria, and fungi cause many well-known diseases, it is common ...
ClassificationBacteriaViruses ATA StudyGuide Answers
... 28. If you do go to the doctor and they give you an antibiotic, you probably have what kind of infection? Bacterial infection 29. What are viruses made of? Genetic material and protein 30. Why aren’t viruses considered living? They have no organelles to take in nutrients or use energy, can’t make pr ...
... 28. If you do go to the doctor and they give you an antibiotic, you probably have what kind of infection? Bacterial infection 29. What are viruses made of? Genetic material and protein 30. Why aren’t viruses considered living? They have no organelles to take in nutrients or use energy, can’t make pr ...
Viruses
... • Viruses contain DNA or RNA but never both • DNA or RNA is surrounded by a protein coat call a capsid – Proteins in the capsid give the virus different shapes – Shape of the virus causes the virus to be cell specific (can only infect a certain type of cell) ...
... • Viruses contain DNA or RNA but never both • DNA or RNA is surrounded by a protein coat call a capsid – Proteins in the capsid give the virus different shapes – Shape of the virus causes the virus to be cell specific (can only infect a certain type of cell) ...
File
... Similarities: genetic material, protective coating, can reproduce. Differences: cell reproduces without a host, virus only reproduces with a host, cell has organelles/nucleus/cell membrane, virus has a capsid, cell is alive, virus is not ...
... Similarities: genetic material, protective coating, can reproduce. Differences: cell reproduces without a host, virus only reproduces with a host, cell has organelles/nucleus/cell membrane, virus has a capsid, cell is alive, virus is not ...
Chpt 17 Viruses and Monerans - Virus a non
... Virus – a non-cellular particle made up of genetic material and protein that can invade living cells. Viruses are so small, they cannot be seen by a light microscope o As a result, the first discovery of a virus did not occur until 1935 (after the electron microscope was invented) We now know that t ...
... Virus – a non-cellular particle made up of genetic material and protein that can invade living cells. Viruses are so small, they cannot be seen by a light microscope o As a result, the first discovery of a virus did not occur until 1935 (after the electron microscope was invented) We now know that t ...
Ch 24 - Bacteria
... Believed to have evolved from early cells due to dependence on other cells to replicate Flu viruses (influenza) invade, most destroyed by immune systems/few escape destruction possibly due to mutation, invade cells, produce thousands These mutations make it difficult for immune system to recogni ...
... Believed to have evolved from early cells due to dependence on other cells to replicate Flu viruses (influenza) invade, most destroyed by immune systems/few escape destruction possibly due to mutation, invade cells, produce thousands These mutations make it difficult for immune system to recogni ...
Reading Guide for Week 5
... together to make macromolecules through the processes of DNA replication, transcription, and translation, and put those macromolecules together to make cellular structures (for example: protein + phospholipids = cell membrane). We’ll also learn about another type of microbe, the virus, and look at h ...
... together to make macromolecules through the processes of DNA replication, transcription, and translation, and put those macromolecules together to make cellular structures (for example: protein + phospholipids = cell membrane). We’ll also learn about another type of microbe, the virus, and look at h ...
CH 19 Viruses Virus Discovery Viruses were detected indirectly long
... The RNA molecules function both as mRNA for synthesis of viral proteins and as genomes for new virus particles released from the cell. Evolution of Viruses Viruses do not fit our definition of living organisms. Since viruses can replicate only within cells, they probably evolved as bits of cellular ...
... The RNA molecules function both as mRNA for synthesis of viral proteins and as genomes for new virus particles released from the cell. Evolution of Viruses Viruses do not fit our definition of living organisms. Since viruses can replicate only within cells, they probably evolved as bits of cellular ...
viral_replication
... be uncoated to make it available to the cell's replication machinery. • Replication of genetic material takes place, as well as the production of capsid and tail proteins. • Once all of the necessary parts have been replicated, individual virus particles are assembled and released. • Release often t ...
... be uncoated to make it available to the cell's replication machinery. • Replication of genetic material takes place, as well as the production of capsid and tail proteins. • Once all of the necessary parts have been replicated, individual virus particles are assembled and released. • Release often t ...
Bio07_TR_U06_CH19.QXD
... DNA is called a prophage. The prophage may remain part of the DNA of the host cell for many generations. Eventually, the prophage will remove itself from the host cell DNA and make new virus particles. Some viruses, called retroviruses, contain RNA as their genetic information. In a retrovirus, the ...
... DNA is called a prophage. The prophage may remain part of the DNA of the host cell for many generations. Eventually, the prophage will remove itself from the host cell DNA and make new virus particles. Some viruses, called retroviruses, contain RNA as their genetic information. In a retrovirus, the ...
Micro Notes
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a _plasmid___ from one bacteria to another via _pili____. A plasmid is a small, self-replicating piece of DNA separate from the main chromosome. Transformation – Direct uptake of DNA f ...
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a _plasmid___ from one bacteria to another via _pili____. A plasmid is a small, self-replicating piece of DNA separate from the main chromosome. Transformation – Direct uptake of DNA f ...
(1) Replication of negative ssRNA viruses
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
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.