Ch 19 Packet
... 11. What are some human diseases that viruses cause? Viruses cause polio, measles, AIDS, mumps, influenza, yellow fever, smallpox, the common cold, and many other diseases. ...
... 11. What are some human diseases that viruses cause? Viruses cause polio, measles, AIDS, mumps, influenza, yellow fever, smallpox, the common cold, and many other diseases. ...
TAXONOMY of VIRUSES
... • Latin for poison • Can infect bacteria, fungi, plants & animals • 1892 - Iwanoski - tobacco mosaic virus (TMV) – Filtrate of diseased plant contained infectious material – Filtrate did not contain bacteria smaller than bacteria ...
... • Latin for poison • Can infect bacteria, fungi, plants & animals • 1892 - Iwanoski - tobacco mosaic virus (TMV) – Filtrate of diseased plant contained infectious material – Filtrate did not contain bacteria smaller than bacteria ...
HIV Coloring
... information encodes few of the proteins needed for reproduction. For this reason, most viruses must use the proteins provided by their host in order to reproduce (make more viruses). In a way, viruses are parasitic; they bring very little with them and steal what they need from the host cell. Becaus ...
... information encodes few of the proteins needed for reproduction. For this reason, most viruses must use the proteins provided by their host in order to reproduce (make more viruses). In a way, viruses are parasitic; they bring very little with them and steal what they need from the host cell. Becaus ...
Viruses and Prions (Chapter 13) Lecture Materials for Amy Warenda
... used for attachment to the host cell 3. Envelope (not all viruses) -some viruses have an envelope around the capsid consisting of lipids, proteins and carbohydrates (cell membrane like) -with envelope = enveloped virus -if a virus does not have an envelope it is called a non-enveloped virus -the env ...
... used for attachment to the host cell 3. Envelope (not all viruses) -some viruses have an envelope around the capsid consisting of lipids, proteins and carbohydrates (cell membrane like) -with envelope = enveloped virus -if a virus does not have an envelope it is called a non-enveloped virus -the env ...
Viruses Vs. Bacteria Excerpt
... Viruses vs. Bacteria Microbiology as a basic science explores microscopic organisms including viruses, bacteria, protozoa, parasites, and some fungi and algae. These organisms lack tissue differentiation, are unicellular, and exhibit diversity of form and size. Viruses, bacteria, fungi and parasites ...
... Viruses vs. Bacteria Microbiology as a basic science explores microscopic organisms including viruses, bacteria, protozoa, parasites, and some fungi and algae. These organisms lack tissue differentiation, are unicellular, and exhibit diversity of form and size. Viruses, bacteria, fungi and parasites ...
Chapter 18.notebook
... • Viruses are named for the disease that they cause or are given a code number ...
... • Viruses are named for the disease that they cause or are given a code number ...
Antiviral Agents – Dr.Roshna
... They are inhibitors of the human CCR5 receptor, a receptor that is found on several host defense cells (Tcells and killer cells). The act of the CCR5 antagonist ...
... They are inhibitors of the human CCR5 receptor, a receptor that is found on several host defense cells (Tcells and killer cells). The act of the CCR5 antagonist ...
Paracytology and virology 2nd stage Germs: Viruses, Bacteria, and
... The availability of cells grown in vitro has facilitated the identification and cultivation of newly isolated viruses and the characterization of previously known ones. There are three basic types of cell cultures. Primary cultures are made by dispersing cells (usually with trypsin) from freshly rem ...
... The availability of cells grown in vitro has facilitated the identification and cultivation of newly isolated viruses and the characterization of previously known ones. There are three basic types of cell cultures. Primary cultures are made by dispersing cells (usually with trypsin) from freshly rem ...
Chapter 6 An Introduction to Viruses
... • Lysogeny results in the spread of the virus without killing the host cell • Phage genes in the bacterial chromosome can cause the production of toxins or enzymes that cause pathology – lysogenic conversion ...
... • Lysogeny results in the spread of the virus without killing the host cell • Phage genes in the bacterial chromosome can cause the production of toxins or enzymes that cause pathology – lysogenic conversion ...
Genetics of Viruses and Bacteria
... • Plasmids (circular DNA in bacteria and Yeast), or Transposons (mobile DNA segments) may have escaped. • May have originated when fragments of host genes escaped or were expelled from cells or from prions. • Can mutate quickly. • Treated with antivirals • Prevented by vaccines. ...
... • Plasmids (circular DNA in bacteria and Yeast), or Transposons (mobile DNA segments) may have escaped. • May have originated when fragments of host genes escaped or were expelled from cells or from prions. • Can mutate quickly. • Treated with antivirals • Prevented by vaccines. ...
Odds for Controls
... insect vector. • When an insect vector is involved, the disease is also known as an arboviral disease. • However, not all arboviral diseases are zoonosis: where the transmission cycle takes place exclusively between insect vector and human e.g. dengue and urban yellow fever. • Examples of viral zoon ...
... insect vector. • When an insect vector is involved, the disease is also known as an arboviral disease. • However, not all arboviral diseases are zoonosis: where the transmission cycle takes place exclusively between insect vector and human e.g. dengue and urban yellow fever. • Examples of viral zoon ...
LOct29 viruses
... Viruses simply genetic information: DNA or RNA contained within protective coat • Inert particles: no metabolism, replication, motility ...
... Viruses simply genetic information: DNA or RNA contained within protective coat • Inert particles: no metabolism, replication, motility ...
Introduction to Viruses
... Life Cycle of Animal Viruses 1. Attachment or adsorption: adsorption : Virus binds to specific receptors (proteins or glycoproteins ...
... Life Cycle of Animal Viruses 1. Attachment or adsorption: adsorption : Virus binds to specific receptors (proteins or glycoproteins ...
MICROBES Microbes - 2 basic types 1. Eukaryotes
... is used to synthesize new capsid proteins by employing organelles of host cell. Newly synthesized capsid proteins and viral nucleic acid molecules are assembled into new viruses. - release - viruses with envelopes are released from the host cell. - in some instances the viral DNA may become part of ...
... is used to synthesize new capsid proteins by employing organelles of host cell. Newly synthesized capsid proteins and viral nucleic acid molecules are assembled into new viruses. - release - viruses with envelopes are released from the host cell. - in some instances the viral DNA may become part of ...
Two relevant eukaryotic viruses
... Eukaryotic Viruses Very small- can only be detected by electron microscopy or by indirect clinical analysis. Obligate intracellular parasites: viruses cannot replicate without the help of a host cell ...
... Eukaryotic Viruses Very small- can only be detected by electron microscopy or by indirect clinical analysis. Obligate intracellular parasites: viruses cannot replicate without the help of a host cell ...
CH 18 Viruses and Bacteria Study Guide
... 2. Why is a virus considered a nonliving parasite? 1) Cannot grow, develop or move 2) cannot reproduce on their own. 3. What was the first virus to be discovered? Tobacco Mosaic 4. What does HIV stand for? Human Immunodeficiency Virus 5. Know the difference between Lytic and Lysogenic Cycles. Lytic: ...
... 2. Why is a virus considered a nonliving parasite? 1) Cannot grow, develop or move 2) cannot reproduce on their own. 3. What was the first virus to be discovered? Tobacco Mosaic 4. What does HIV stand for? Human Immunodeficiency Virus 5. Know the difference between Lytic and Lysogenic Cycles. Lytic: ...
Micro-Ch10-13_B.pdf
... 65) A lipid envelope is acquired during which of the following steps? A) Release B) Penetration C) Adsorption D) Uncoating E) None of the above 66) An example of a latent viral infection is A) Subacute sclerosing panencephalitis. B) Smallpox. C) Cold sores. D) Influenza. E) None of the above. 67) S ...
... 65) A lipid envelope is acquired during which of the following steps? A) Release B) Penetration C) Adsorption D) Uncoating E) None of the above 66) An example of a latent viral infection is A) Subacute sclerosing panencephalitis. B) Smallpox. C) Cold sores. D) Influenza. E) None of the above. 67) S ...
Chapter 18 and 31
... • Fungi can be multicellular or single-celled. – take nutrients from host cells – occur in warm and damp places ...
... • Fungi can be multicellular or single-celled. – take nutrients from host cells – occur in warm and damp places ...
resume_nante
... Morocco. The water samples were concentrated by glass wool method then analyzed for human infectious enterovirus by integrated cell culture-PCR (ICC/RT-PCR) and by qRT-PCR for other enteric viruses. Results: Human adenovirus, polyomavirus JC, Norovirus GII and rotavirus A were detected in 63, 57, 43 ...
... Morocco. The water samples were concentrated by glass wool method then analyzed for human infectious enterovirus by integrated cell culture-PCR (ICC/RT-PCR) and by qRT-PCR for other enteric viruses. Results: Human adenovirus, polyomavirus JC, Norovirus GII and rotavirus A were detected in 63, 57, 43 ...
Viral Structure Virion, protein capsid, some have lipid envelope
... • Attachment proteins on virion surface recognize receptors on host cells • Matrix protein: links the nucleocapsid with the lipid envelope • Nucleic acid binding proteins • Enzymes: e.g. enzymes necessary for nucleic acid replication Envelope • Lipid bilayer derived from plasma or nuclear membrane ...
... • Attachment proteins on virion surface recognize receptors on host cells • Matrix protein: links the nucleocapsid with the lipid envelope • Nucleic acid binding proteins • Enzymes: e.g. enzymes necessary for nucleic acid replication Envelope • Lipid bilayer derived from plasma or nuclear membrane ...
Hospitality and Tourism Travel and Tourism Management Multiple Choice Science Assessment Problems
... c. A substance used to destroy pathogens d. Antimicrobial substance that is applied to the skin 7. A virus is made up of two basic components, the protein coat and ___________. a. DNA or RNA b. hard shell c. flagellum d. nucleus 8. The HIV virus is known to infect and destroy a. red blood cells b. k ...
... c. A substance used to destroy pathogens d. Antimicrobial substance that is applied to the skin 7. A virus is made up of two basic components, the protein coat and ___________. a. DNA or RNA b. hard shell c. flagellum d. nucleus 8. The HIV virus is known to infect and destroy a. red blood cells b. k ...
Virus PowerPoint
... viruses, because they are the maximum size able to be transported through the endosome (i.e. envelope fusion is not necessary). Endosome? a membrane bound compartment inside eukaryotic cells. It is a compartment of the endocytic membrane transport pathway from the plasma membrane to the lysosome. ...
... viruses, because they are the maximum size able to be transported through the endosome (i.e. envelope fusion is not necessary). Endosome? a membrane bound compartment inside eukaryotic cells. It is a compartment of the endocytic membrane transport pathway from the plasma membrane to the lysosome. ...
Lesson Plan BISP Characterisation Clothes
... Go through worksheet answers as a way of recapping previous lesson. Tell them that this lesson we’ll be looking at the structure of viruses and how the structure is important for function. We’re going to make a model of a virus and we’ll use Dengue Virus as an example. What do viruses look like? (St ...
... Go through worksheet answers as a way of recapping previous lesson. Tell them that this lesson we’ll be looking at the structure of viruses and how the structure is important for function. We’re going to make a model of a virus and we’ll use Dengue Virus as an example. What do viruses look like? (St ...
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.