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Chapter 18 Lecture Slides - Tanque Verde Unified School District
... • Because the infected cells are still able to function normally, an infected person may not appear sick, but they can still transmit the virus in their body fluids. ...
... • Because the infected cells are still able to function normally, an infected person may not appear sick, but they can still transmit the virus in their body fluids. ...
Slide - North Carolina Institute for Public Health
... Compare blood samples taken at the time of exposure (or shortly thereafter) and weeks later Looks at antibodies, or immunoglobulins If no antibodies are present (or present in early form) at first blood sample and fully mature ...
... Compare blood samples taken at the time of exposure (or shortly thereafter) and weeks later Looks at antibodies, or immunoglobulins If no antibodies are present (or present in early form) at first blood sample and fully mature ...
Unit 4
... 3) To create further copies of the gene itself. 2. Describe the natural function of restriction enzymes. Restriction enzymes protect bacteria from intruding DNA and other organisms. The foreign DNA is cut up, but its own DNA is protected by adenine and cytosine in the sequence. 3. Describe how restr ...
... 3) To create further copies of the gene itself. 2. Describe the natural function of restriction enzymes. Restriction enzymes protect bacteria from intruding DNA and other organisms. The foreign DNA is cut up, but its own DNA is protected by adenine and cytosine in the sequence. 3. Describe how restr ...
Common Antiviral Agents Common Antiviral Agents
... the virus will subsequently enter the cell. The 16 different H structures all have a similar polypeptide composition, but differ in amino acid composition at certain sites. Only molecules H1, H2 and H3 will fit into the respiratory tract of humans; birds accept all 16. Initiation of infection is alw ...
... the virus will subsequently enter the cell. The 16 different H structures all have a similar polypeptide composition, but differ in amino acid composition at certain sites. Only molecules H1, H2 and H3 will fit into the respiratory tract of humans; birds accept all 16. Initiation of infection is alw ...
Influenza virus:
... resulting new strains that non-identified by immune system(escape from immune recognition). Two types of variation are known: Antigenic shift( complete change in H or N or both). This can only occur with influenza type A because it has wide host range , when two viruses co-infect the same cell (o ...
... resulting new strains that non-identified by immune system(escape from immune recognition). Two types of variation are known: Antigenic shift( complete change in H or N or both). This can only occur with influenza type A because it has wide host range , when two viruses co-infect the same cell (o ...
Lichens—a new source or yet unknown host of herbaceous plant
... been identified from less than 1 % of known eukaryotic algal species but no virus has been found in Trebouxia or in Trentepohlia (Chlorophyta, Pleurastrophyceae, Pleurastrales), the most common green lichen photobionts. On the other hand, dsDNA viruses infecting related Chlorella algae are well know ...
... been identified from less than 1 % of known eukaryotic algal species but no virus has been found in Trebouxia or in Trentepohlia (Chlorophyta, Pleurastrophyceae, Pleurastrales), the most common green lichen photobionts. On the other hand, dsDNA viruses infecting related Chlorella algae are well know ...
Exam 2
... Describe structural differences between yeast, filamentous molds and complex molds. Describe the colony morphology of a filamentous mold; yeast. How does morphology of a filamentous mold colony differ from that of a bacterial colony? ...
... Describe structural differences between yeast, filamentous molds and complex molds. Describe the colony morphology of a filamentous mold; yeast. How does morphology of a filamentous mold colony differ from that of a bacterial colony? ...
The immunology of virus infection in asthma
... IgE and non-IgE mediated acute and chronic immune response The asthmatic airway is an infiltrate of the eosinophils and T-lymphocytes with type2 cytokine and IL-3,4,5 ...
... IgE and non-IgE mediated acute and chronic immune response The asthmatic airway is an infiltrate of the eosinophils and T-lymphocytes with type2 cytokine and IL-3,4,5 ...
1. Viral Structure What exactly is a Virus? Chapter 13: Viruses
... Some DNA viruses integrate the viral DNA into the chromosomal DNA of the host cell: • analogous to the lysogeny of bacteriophage λ • the inserted viral DNA is considered a provirus which can remain dormant indefinitely • such an infection is considered to be latent • the provirus can become active d ...
... Some DNA viruses integrate the viral DNA into the chromosomal DNA of the host cell: • analogous to the lysogeny of bacteriophage λ • the inserted viral DNA is considered a provirus which can remain dormant indefinitely • such an infection is considered to be latent • the provirus can become active d ...
HANDOUTS 6 year program of medical studies Program of medical
... bacterial spores, are killed. Sterilization can be achieved by physical, chemical and physicochemical means. Chemicals used as sterilizing agents are called chemisterilants. Disinfection is the process of elimination of most pathogenic microorganisms (excluding bacterial spores) on inanimate objects ...
... bacterial spores, are killed. Sterilization can be achieved by physical, chemical and physicochemical means. Chemicals used as sterilizing agents are called chemisterilants. Disinfection is the process of elimination of most pathogenic microorganisms (excluding bacterial spores) on inanimate objects ...
3.1 Bacteria and viruses flashcards
... 26) In Gram-negative organisms only, the outer membrane contains a special structure called what? 27) What portion of the bacterial cell membrane does our immune system recognise as being foreign? 28) One little piece of the LPS contains a substance called what? 29) If Toxin A builds up in humans or ...
... 26) In Gram-negative organisms only, the outer membrane contains a special structure called what? 27) What portion of the bacterial cell membrane does our immune system recognise as being foreign? 28) One little piece of the LPS contains a substance called what? 29) If Toxin A builds up in humans or ...
Bacteria & Virus notes 2014
... Bacteriophage – viruses that infect bacteria Used to study viruses Lytic Cycle Viral genome is released into the host cell Replication follows immediately Cellular components used to make new viruses Viral enzyme kills cell. ...
... Bacteriophage – viruses that infect bacteria Used to study viruses Lytic Cycle Viral genome is released into the host cell Replication follows immediately Cellular components used to make new viruses Viral enzyme kills cell. ...
first lecture
... Louis Pasteur - showed microbes as causes of fermentation and spoilage, disproved spontaneous generation of microorganisms, developed pasteurization, demonstrated what is now known as Germ Theory of Disease, developed a rabies ...
... Louis Pasteur - showed microbes as causes of fermentation and spoilage, disproved spontaneous generation of microorganisms, developed pasteurization, demonstrated what is now known as Germ Theory of Disease, developed a rabies ...
Why Don't Antibiotics Work on Viruses?
... e Sciences-HHMI Outreach. Copyright 2008 President and Fellows of Harvard College. http://en.wikipedia.org/wiki/Image:Average_prokaryote_cell-_en.svg ...
... e Sciences-HHMI Outreach. Copyright 2008 President and Fellows of Harvard College. http://en.wikipedia.org/wiki/Image:Average_prokaryote_cell-_en.svg ...
Infection Control Study Guide
... In California in 2000 in the pedicure salons there was an infection in over a 100 salons called Mycobacterium Fortuitum Furunculosis Cocci rarely show self-movement Flagella is a bacteria with hair like extensions to help it move about Mitosis is the process by which bacteria divide Spores during th ...
... In California in 2000 in the pedicure salons there was an infection in over a 100 salons called Mycobacterium Fortuitum Furunculosis Cocci rarely show self-movement Flagella is a bacteria with hair like extensions to help it move about Mitosis is the process by which bacteria divide Spores during th ...
3.1 Bacteria and Viruses
... • Viruses were first discovered in 1883 when a German scientist was studying a disease that stunted the growth of tobacco plants. ...
... • Viruses were first discovered in 1883 when a German scientist was studying a disease that stunted the growth of tobacco plants. ...
Bacteria & Viruses PowerPoint
... • Prions are thought to act by causing other proteins to fold themselves incorrectly, resulting in improper functioning. • Prions are responsible for many animal diseases, such as mad cow disease and its human equivalent, Creutzfeldt-Jakob disease, which causes nerve cells in the brain to burst. ...
... • Prions are thought to act by causing other proteins to fold themselves incorrectly, resulting in improper functioning. • Prions are responsible for many animal diseases, such as mad cow disease and its human equivalent, Creutzfeldt-Jakob disease, which causes nerve cells in the brain to burst. ...
Chicken Pox - Kelsey Trail Health Region
... NIPAWIN HOSPITAL CHICKEN POX Chicken Pox is caused by a virus. The chicken pox virus lives in the nose and throat and in blisters on the skin of an infected person. It is spread by direct contact with infected fluids from these areas. The virus can be spread for about 1 - 2 days before a rash appear ...
... NIPAWIN HOSPITAL CHICKEN POX Chicken Pox is caused by a virus. The chicken pox virus lives in the nose and throat and in blisters on the skin of an infected person. It is spread by direct contact with infected fluids from these areas. The virus can be spread for about 1 - 2 days before a rash appear ...
Document
... Bacteriophage – viruses that infect bacteria Used to study viruses Lytic Cycle Viral genome is released into the host cell Replication follows immediately Cellular components used to make new viruses Viral enzyme kills cell. ...
... Bacteriophage – viruses that infect bacteria Used to study viruses Lytic Cycle Viral genome is released into the host cell Replication follows immediately Cellular components used to make new viruses Viral enzyme kills cell. ...
65KB - NZQA
... For A: Spores are the reproductive units for fungi: they carry the genetic code / DNA to produce another identical fungus OR they are small / light to be carried a distance by wind to land and germinate / start growing on a food source (ie need to link form to function). For B: Sporangia are sacs, w ...
... For A: Spores are the reproductive units for fungi: they carry the genetic code / DNA to produce another identical fungus OR they are small / light to be carried a distance by wind to land and germinate / start growing on a food source (ie need to link form to function). For B: Sporangia are sacs, w ...
Review Sheet Key - Spring Branch ISD
... What is a retrovirus? ____HAS RNA INSTEAD OF DNA________________________________________________ What is reverse transcription? TURNING RNA BACK INTO DNA What type of cells do HIV infect and kill? ___IMMUNE SYSTEM______________________________ Explain generally how viruses use host cells to replicat ...
... What is a retrovirus? ____HAS RNA INSTEAD OF DNA________________________________________________ What is reverse transcription? TURNING RNA BACK INTO DNA What type of cells do HIV infect and kill? ___IMMUNE SYSTEM______________________________ Explain generally how viruses use host cells to replicat ...
Fungal negative-stranded RNA virus that is related to bornaviruses
... viruses in transcriptome shotgun assembly libraries of another fungal pathogen, Sclerotinia homoeocarpa, and suggested that (−)ssRNA viruses are most likely to exist in fungi (10). However, to date it is not known whether (−)ssRNA viruses do in fact occur in fungi and their properties also remain as ...
... viruses in transcriptome shotgun assembly libraries of another fungal pathogen, Sclerotinia homoeocarpa, and suggested that (−)ssRNA viruses are most likely to exist in fungi (10). However, to date it is not known whether (−)ssRNA viruses do in fact occur in fungi and their properties also remain as ...
Introduction of green fluorescent protein into
... unpurified infective supernatant) and this can be used to infect other cells. This newly produced recombinant virus consists of envelope and coat proteins (which were encoded by the helper RNA) and the genomic RNA (containing the inserted gene). No helper virus RNA is packaged in the genome of the n ...
... unpurified infective supernatant) and this can be used to infect other cells. This newly produced recombinant virus consists of envelope and coat proteins (which were encoded by the helper RNA) and the genomic RNA (containing the inserted gene). No helper virus RNA is packaged in the genome of the n ...
Infectious and Parasitic Diseases
... • Congenital absence of complement components C5, C6, C7, and C8 prevents formation of a fully functional membrane attack complex and permits disseminated, and often recurrent, Neisseria infections. • Diseases such as diabetes mellitus and chemotherapeutic drugs that interfere with the production o ...
... • Congenital absence of complement components C5, C6, C7, and C8 prevents formation of a fully functional membrane attack complex and permits disseminated, and often recurrent, Neisseria infections. • Diseases such as diabetes mellitus and chemotherapeutic drugs that interfere with the production o ...
Introduction to viruses
![](https://commons.wikimedia.org/wiki/Special:FilePath/Rotavirus_Reconstruction.jpg?width=300)
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.