Virus and Bacteria notes
... and injects it DNA into a host bacterium. The host bacterium breaks apart, or lyses. Bacteriophages are able to infect new host cells. The viral DNA forms a circle. ...
... and injects it DNA into a host bacterium. The host bacterium breaks apart, or lyses. Bacteriophages are able to infect new host cells. The viral DNA forms a circle. ...
Editable PPT - Science Prof Online
... group within a genus). But more than 200 different viral types can cause colds. That is why vaccination not practical. AKA: Nasopharyngitis, acute viral rhinopharyngitis, acute coryza (say coe-rize-ah). TRANSMISSION: 1. Spreads from infected persons through air-borne droplets, direct contact with na ...
... group within a genus). But more than 200 different viral types can cause colds. That is why vaccination not practical. AKA: Nasopharyngitis, acute viral rhinopharyngitis, acute coryza (say coe-rize-ah). TRANSMISSION: 1. Spreads from infected persons through air-borne droplets, direct contact with na ...
5echap10n16guidedreading
... Chapter 10.17+ & 16.7+ Guided Reading Assignment Chapter 10 1. Circle the bacteriophage. Label the parts of the bacteriophage. Put a square around the enveloped virus. Label the membranous layer. ...
... Chapter 10.17+ & 16.7+ Guided Reading Assignment Chapter 10 1. Circle the bacteriophage. Label the parts of the bacteriophage. Put a square around the enveloped virus. Label the membranous layer. ...
Biological hazards
... Colonization. Some virulent bacteria produce special proteins that allow them to colonize parts of the host body. Helicobacter pylori is able to survive in the acidic environment of the human stomach by producing the enzyme urease. Colonization of the stomach lining by this bacterium can lead to Gas ...
... Colonization. Some virulent bacteria produce special proteins that allow them to colonize parts of the host body. Helicobacter pylori is able to survive in the acidic environment of the human stomach by producing the enzyme urease. Colonization of the stomach lining by this bacterium can lead to Gas ...
1 of 20) Name this stage of the lytic cyle.
... paper. You will be given about 30 seconds per questions. The group with the most correct answers will win. ...
... paper. You will be given about 30 seconds per questions. The group with the most correct answers will win. ...
Disease and Disease-Producing Organisms Part 1
... Explain methods through which microorganisms can ...
... Explain methods through which microorganisms can ...
Transcript
... There is one exception, the Poxvirus. The Poxvirus is a large DNA virus that replicates in the cytoplasm of the cell and does not use the hosts RNA Polymerase II. It makes its own enzymes for transcription. This is important because if you want to make antiviral drugs for small pox, these enzymes ar ...
... There is one exception, the Poxvirus. The Poxvirus is a large DNA virus that replicates in the cytoplasm of the cell and does not use the hosts RNA Polymerase II. It makes its own enzymes for transcription. This is important because if you want to make antiviral drugs for small pox, these enzymes ar ...
Cells/Organelles Case - Project
... • Drugs are not working to cure the infection. • Other servicemen are also infected, and they are seeing a real problem with battlereadiness. • Army Medical College researchers have been brought in…. • Your reading assignment and assessment for the next class deal with how to boost immune system res ...
... • Drugs are not working to cure the infection. • Other servicemen are also infected, and they are seeing a real problem with battlereadiness. • Army Medical College researchers have been brought in…. • Your reading assignment and assessment for the next class deal with how to boost immune system res ...
(and bacteria).
... Cell wall: A stiff structure outside of the cytoplasmic membrane in plant cells (and bacteria). Ensures a specific form of the cell and also contributes to stiffness of tissues (like wood). Centriole: An organelle involved in separation of chromosome copies in mitosis and other ”motor” activities. C ...
... Cell wall: A stiff structure outside of the cytoplasmic membrane in plant cells (and bacteria). Ensures a specific form of the cell and also contributes to stiffness of tissues (like wood). Centriole: An organelle involved in separation of chromosome copies in mitosis and other ”motor” activities. C ...
Cell wall
... Cell wall: A stiff structure outside of the cytoplasmic membrane in plant cells (and bacteria). Ensures a specific form of the cell and also contributes to stiffness of tissues (like wood). Centriole: An organelle involved in separation of chromosome copies in mitosis and other ”motor” activities. C ...
... Cell wall: A stiff structure outside of the cytoplasmic membrane in plant cells (and bacteria). Ensures a specific form of the cell and also contributes to stiffness of tissues (like wood). Centriole: An organelle involved in separation of chromosome copies in mitosis and other ”motor” activities. C ...
TAXONOMY of VIRUSES
... • 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 ...
... • 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 ...
BACTERIOPHAGE
... .Lysis and liberation of new phage : the cell bursts and liberates the newly formed phages. When a phage infects bacteria it results in either: ) A normal lytic cycle. ) A lysogenic cycle, in which the viral DNA is inserted into the bacterial chromosome to form a prophage and result in a lysogen ...
... .Lysis and liberation of new phage : the cell bursts and liberates the newly formed phages. When a phage infects bacteria it results in either: ) A normal lytic cycle. ) A lysogenic cycle, in which the viral DNA is inserted into the bacterial chromosome to form a prophage and result in a lysogen ...
Meet the Microbes - Science Prof Online
... group within a genus). But more than 200 different viral types can cause colds. That is why vaccination not practical. AKA: Nasopharyngitis, acute viral rhinopharyngitis, acute coryza (say coe-rize-ah). TRANSMISSION: 1. Spreads from infected persons through air-borne droplets, direct contact with na ...
... group within a genus). But more than 200 different viral types can cause colds. That is why vaccination not practical. AKA: Nasopharyngitis, acute viral rhinopharyngitis, acute coryza (say coe-rize-ah). TRANSMISSION: 1. Spreads from infected persons through air-borne droplets, direct contact with na ...
Virus
... and nonliving things. · Viruses can not grow on inanimate culture media(non-living), but grow in tissue culture(living cells). 4. Viruses can not replicate by binary fission or mitosis ,but they replicate by complex process . · The viruses produce many copies of their nucleic acid and proteins, and ...
... and nonliving things. · Viruses can not grow on inanimate culture media(non-living), but grow in tissue culture(living cells). 4. Viruses can not replicate by binary fission or mitosis ,but they replicate by complex process . · The viruses produce many copies of their nucleic acid and proteins, and ...
1. dia - Figshare
... Recombination among co-infecting plant RNA viruses is a natural phenomenon that appears to have played a significant role in the speciation and evolution of many strains. It also has particular significance for the risk assessment of plants that have been genetically modified for disease resistance ...
... Recombination among co-infecting plant RNA viruses is a natural phenomenon that appears to have played a significant role in the speciation and evolution of many strains. It also has particular significance for the risk assessment of plants that have been genetically modified for disease resistance ...
Pathogens – Bacteria & Viruses
... Credit: © Dr. George Chapman/Visuals Unlimited T4 Bacteriophages on Escherichia coli) bacteria. T4 bacteriophages are parasites of E. coli, a bacteria common in the human gut. The virus attaches itself to the host bacteria cell wall by its tail fibers. The sheath then contracts, injecting the conte ...
... Credit: © Dr. George Chapman/Visuals Unlimited T4 Bacteriophages on Escherichia coli) bacteria. T4 bacteriophages are parasites of E. coli, a bacteria common in the human gut. The virus attaches itself to the host bacteria cell wall by its tail fibers. The sheath then contracts, injecting the conte ...
Microorganisms: Viruses
... shapes: polyhedral, helical, or complex. Their structure can be enveloped or naked (non-enveloped) and can remain dormant for long periods before being reactivated by favorable conditions (e.g., reduced host defense or toxins), thereby going from latent to productive infections. Finally, review the ...
... shapes: polyhedral, helical, or complex. Their structure can be enveloped or naked (non-enveloped) and can remain dormant for long periods before being reactivated by favorable conditions (e.g., reduced host defense or toxins), thereby going from latent to productive infections. Finally, review the ...
Introduction to Viruses
... 4. Retroviruses : Unique family of enveloped viruses. Have the ability to convert their RNA genetic material into DNA through an enzyme called reverse transcriptase transcriptase.. Viral DNA is integrated into host chromosome (provirus (provirus)) where it can remain dormant for a long time. Include ...
... 4. Retroviruses : Unique family of enveloped viruses. Have the ability to convert their RNA genetic material into DNA through an enzyme called reverse transcriptase transcriptase.. Viral DNA is integrated into host chromosome (provirus (provirus)) where it can remain dormant for a long time. Include ...
QE GenKnowl Topics
... What is genetic complementation? What is reassortment? What is marker rescue? What are the basic requirements (features of the virus) for reverse genetics? What is a defective interfering (DI) virus? How do they arise? What common features (or requirements) of virus structure are necessary for the ...
... What is genetic complementation? What is reassortment? What is marker rescue? What are the basic requirements (features of the virus) for reverse genetics? What is a defective interfering (DI) virus? How do they arise? What common features (or requirements) of virus structure are necessary for the ...
MICROBES Microbes - 2 basic types 1. Eukaryotes
... - most are multicellular with long branches called filaments - do not have flagella - release spores in large numbers that germinate and develop filaments that release chemicals that breaks down the substrate they are on (for example athletes foot) - over 100,000 species on earth - about 100 are hum ...
... - most are multicellular with long branches called filaments - do not have flagella - release spores in large numbers that germinate and develop filaments that release chemicals that breaks down the substrate they are on (for example athletes foot) - over 100,000 species on earth - about 100 are hum ...
Viruses Archaebacteria
... sunlight like plants do. • Fungi include single-celled creatures that exist individually—the yeasts—and multicellular bunches, such as molds or mushrooms. • Many fungi form long filament-like, or thread-like, strands of cells called hyphae (high-fee). These hyphae are what give mold colonies their ...
... sunlight like plants do. • Fungi include single-celled creatures that exist individually—the yeasts—and multicellular bunches, such as molds or mushrooms. • Many fungi form long filament-like, or thread-like, strands of cells called hyphae (high-fee). These hyphae are what give mold colonies their ...
Chapter 13 Viruses General Characteristics of all viruses
... General Characteristics of all viruses • Contain a single type of nucleic acid (DNA or RNA) • Contains a protein coat that surrounds the nucleic acid – Capsid: most of mass of cell (subunit=capsomers) – May be enclosed by envelope (part of host’s plasma membrane); may be covered with spikes ...
... General Characteristics of all viruses • Contain a single type of nucleic acid (DNA or RNA) • Contains a protein coat that surrounds the nucleic acid – Capsid: most of mass of cell (subunit=capsomers) – May be enclosed by envelope (part of host’s plasma membrane); may be covered with spikes ...
College of Medicine Microbiology
... Viruses can not grow on inanimate culture media(non-living), but grow in tissue cultures(living cells). 4. Viruses can not replicate by binary fission or mitosis ,but they replicate by complex process . The viruses produce many copies of their nucleic acid and proteins, and then re-assemble into ...
... Viruses can not grow on inanimate culture media(non-living), but grow in tissue cultures(living cells). 4. Viruses can not replicate by binary fission or mitosis ,but they replicate by complex process . The viruses produce many copies of their nucleic acid and proteins, and then re-assemble into ...
Block B Towaki, Brian, Julio, Jeff Antigens and Antibodies
... • Distinguish between antigens and antibodies ...
... • Distinguish between antigens and antibodies ...
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.