Viruses - SCHOOLinSITES
... Viruses & diseases Most viruses act on specific types of cells. Plant viruses do not infect animals cells! Keep in mind that viruses can MUTATE very quickly to attack other types of cells ...
... Viruses & diseases Most viruses act on specific types of cells. Plant viruses do not infect animals cells! Keep in mind that viruses can MUTATE very quickly to attack other types of cells ...
Supplementary Figures - PowerPoint
... Supplementary Figure 4 | Effect of HA mutations on SAα2,6Gal recognition. Mutations found in the HA of A/Vietnam/30408/05clone7 were introduced individually or in combination into the reference VN1194 HA. Direct binding activity to sialylglycopolymers containing either α2,3-linked (blue) or α2,6-lin ...
... Supplementary Figure 4 | Effect of HA mutations on SAα2,6Gal recognition. Mutations found in the HA of A/Vietnam/30408/05clone7 were introduced individually or in combination into the reference VN1194 HA. Direct binding activity to sialylglycopolymers containing either α2,3-linked (blue) or α2,6-lin ...
Worked on Tobacco Mosaic Virus
... juice through a filter. • Rubbed the filtered juice onto leaves. • Still became infected. • Concluded that whatever these disease causing particles were, they were very small (smaller than bacteria). ...
... juice through a filter. • Rubbed the filtered juice onto leaves. • Still became infected. • Concluded that whatever these disease causing particles were, they were very small (smaller than bacteria). ...
Clinical Virology: Part Two The Viruses
... • High mortality rates • Unknown reservoirs in nature ...
... • High mortality rates • Unknown reservoirs in nature ...
Viruses Lecture 1
... Viruses are most numerous “microorganisms” on the planet. Infect ALL types of cellular organisms All viruses are the same (strategically)! Viruses package their genome into a particle which is then infectious The viral genome has all of the information that it needs to attach and enter the host, dec ...
... Viruses are most numerous “microorganisms” on the planet. Infect ALL types of cellular organisms All viruses are the same (strategically)! Viruses package their genome into a particle which is then infectious The viral genome has all of the information that it needs to attach and enter the host, dec ...
Viruses - Chap 13 partI
... Host range Permissive or compatible host cells permit viral replication Nonpermissive host cells do not permit viral replication Host range may be broad (a number of species) or narrow (one cell type of a single species) e.g., bacteria, archaea, fungi, protozoa, plants and animals are infect ...
... Host range Permissive or compatible host cells permit viral replication Nonpermissive host cells do not permit viral replication Host range may be broad (a number of species) or narrow (one cell type of a single species) e.g., bacteria, archaea, fungi, protozoa, plants and animals are infect ...
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 and Bacteria
... They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not its original reproductions. ...
... They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not its original reproductions. ...
Bacteria vs. Virus KWL and Article
... Definition: Viruses are the simplest and tiniest of microbes. They can be as much as 10,000 times smaller than Bacteria. Viruses consist of a small collection of genetic material (DNA or RNA) encased in a protective coat called a capsid. Function: When viruses come into contact with the “host cells” ...
... Definition: Viruses are the simplest and tiniest of microbes. They can be as much as 10,000 times smaller than Bacteria. Viruses consist of a small collection of genetic material (DNA or RNA) encased in a protective coat called a capsid. Function: When viruses come into contact with the “host cells” ...
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 ...
Chapter 13 Notes
... Can’t be _______________ from solution o Obligate ____________________ parasites No ___________________________________ when isolated o Contain single type of __________________________________ o Protein coat (_____________) surrounding the nucleic acid Some are enclosed by an ________________ ...
... Can’t be _______________ from solution o Obligate ____________________ parasites No ___________________________________ when isolated o Contain single type of __________________________________ o Protein coat (_____________) surrounding the nucleic acid Some are enclosed by an ________________ ...
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 ...
Cultivation of virus
... 1. Biological System a) Natural host b) Experimental animals c) Transgenic animals ...
... 1. Biological System a) Natural host b) Experimental animals c) Transgenic animals ...
Viruses
... arranged in a capsid w/ 20 triangular faces; an icosahedron * Some have viral envelopes that cloak their capsids. * Viruses are obligate intracellular parasites; can reproduce only w/in a host cell * They lack enzymes for metabolism or ribosomes for protein production *Bacteriophage- Virus that atta ...
... arranged in a capsid w/ 20 triangular faces; an icosahedron * Some have viral envelopes that cloak their capsids. * Viruses are obligate intracellular parasites; can reproduce only w/in a host cell * They lack enzymes for metabolism or ribosomes for protein production *Bacteriophage- Virus that atta ...
BTY328: Viruses
... viruses have a considerable obstacle to overcome when trying to establish themselves in a host. TMV and a few other viruses may be carried by the wind or animals and then enter when leaves are mechanically damaged. The most important agents of transmission (vectors) are insects that feed on plants, ...
... viruses have a considerable obstacle to overcome when trying to establish themselves in a host. TMV and a few other viruses may be carried by the wind or animals and then enter when leaves are mechanically damaged. The most important agents of transmission (vectors) are insects that feed on plants, ...
Viruses - TeacherWeb
... only a limited genetic blueprint and they don't have the necessary building tools. They have to invade other cells and hijack their cellular machinery to reproduce. Viruses invade by attaching to a cell and injecting their genes or by being swallowed up by the cell. ...
... only a limited genetic blueprint and they don't have the necessary building tools. They have to invade other cells and hijack their cellular machinery to reproduce. Viruses invade by attaching to a cell and injecting their genes or by being swallowed up by the cell. ...
Viruses, Viroids, and Prions
... 1. Attachment: Virus gains entry into specific host cell based on host-specific match between virus surface molecules and host cell receptors. 2. Penetration: Host cell engulfs virus or virus injects its genome into the cytoplasm. 3. Biosynthesis: New viral components are synthesized using hos ...
... 1. Attachment: Virus gains entry into specific host cell based on host-specific match between virus surface molecules and host cell receptors. 2. Penetration: Host cell engulfs virus or virus injects its genome into the cytoplasm. 3. Biosynthesis: New viral components are synthesized using hos ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 7. Glyoxylate pathway is the sole source of carbon for some microorganisms. 8. F factor plasmids play a major role in transcription. 9. Viruses largely lack metabolic machinery of their own to synthesize proteins. 10. Hyperplasia is the uncontrolled proliferation of cells. III. Complete the followin ...
... 7. Glyoxylate pathway is the sole source of carbon for some microorganisms. 8. F factor plasmids play a major role in transcription. 9. Viruses largely lack metabolic machinery of their own to synthesize proteins. 10. Hyperplasia is the uncontrolled proliferation of cells. III. Complete the followin ...
Bio07_TR_U06_CH19.QXD
... copies of itself, and causes the cell to burst, releasing new virus particles that can attack other cells. The virus uses the materials of the host cell to make copies of its own DNA molecule. In a lysogenic infection, a virus integrates its DNA into the DNA of the host cell, and the viral genetic i ...
... copies of itself, and causes the cell to burst, releasing new virus particles that can attack other cells. The virus uses the materials of the host cell to make copies of its own DNA molecule. In a lysogenic infection, a virus integrates its DNA into the DNA of the host cell, and the viral genetic i ...
Summaries II
... • Those with optima greater than 80°C are called hyperthermophiles. These organisms inhabit hot environments up to and including boiling hot springs, as well as undersea hydrothermal vents that can have temperatures in excess of 100°C. • Thermophiles and hyperthermophiles ...
... • Those with optima greater than 80°C are called hyperthermophiles. These organisms inhabit hot environments up to and including boiling hot springs, as well as undersea hydrothermal vents that can have temperatures in excess of 100°C. • Thermophiles and hyperthermophiles ...
L9_viruses_7e
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
Chapter 20
... Retroviruses • Animal viruses with RNA genomes that have to be converted to DNA within host cell by an enzyme called reverse transcriptase • Before it can integrate into host genome, RNA DNA ...
... Retroviruses • Animal viruses with RNA genomes that have to be converted to DNA within host cell by an enzyme called reverse transcriptase • Before it can integrate into host genome, RNA DNA ...
Introduction to viruses
A virus is a biological agent that reproduces inside the cells of living hosts. When infected by a virus, a host cell is forced to produce many thousands of identical copies of the original virus, at an extraordinary rate. Unlike most living things, viruses do not have cells that divide; new viruses are assembled in the infected host cell. But unlike still simpler infectious agents, viruses contain genes, which gives them the ability to mutate and evolve. Over 5,000 species of viruses have been discovered.The origins of viruses are unclear: some may have evolved from plasmids—pieces of DNA that can move between cells—while others may have evolved from bacteria. A virus consists of two or three parts: genes, made from either DNA or RNA, long molecules that carry genetic information; a protein coat that protects the genes; and in some viruses, an envelope of fat that surrounds and protects them when they are not contained within a host cell. Viruses vary in shape from the simple helical and icosahedral to more complex structures. Viruses range in size from 20 to 300 nanometres; it would take 30,000 to 750,000 of them, side by side, to stretch to 1 centimetre (0.39 in).Viruses spread in many ways. Just as many viruses are very specific as to which host species or tissue they attack, each species of virus relies on a particular method for propagation. Plant viruses are often spread from plant to plant by insects and other organisms, known as vectors. Some viruses of animals, including humans, are spread by exposure to infected bodily fluids. Viruses such as influenza are spread through the air by droplets of moisture when people cough or sneeze. Viruses such as norovirus are transmitted by the faecal–oral route, which involves the contamination of hands, food and water. Rotavirus is often spread by direct contact with infected children. The human immunodeficiency virus, HIV, is transmitted by bodily fluids transferred during sex. Others, such as the Dengue virus, are spread by blood-sucking insects.Viral infections can cause disease in humans, animals and even plants. However, they are usually eliminated by the immune system, conferring lifetime immunity to the host for that virus. Antibiotics have no effect on viruses, but antiviral drugs have been developed to treat life-threatening infections. Vaccines that produce lifelong immunity can prevent some viral infections.