• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
LOct29 viruses.ppt
LOct29 viruses.ppt

... Viruses: Obligate Intracellular Parasites ...
17-1 Viruses The name
17-1 Viruses The name

... If it finds its way into a place free of __________ and filled with __________, they grow very quickly They produce __________ that cause “botulism” These are deadly; they interfere with __________ activity, causing __________ and sometimes __________ Commercially canned goods are safe because: ...
disinfectants - Ark Veterinary Centre
disinfectants - Ark Veterinary Centre

... to achieve in the home. Disinfection is the selective elimination of certain undesirable microorganisms in order to prevent their transmission. In terms of the home with pet cats, disinfection is necessary to prevent the spread of infectious diseases from one cat to another, or, in a few cases, to h ...
Mononucleosis (Infectious) - Northern Kentucky Health Department
Mononucleosis (Infectious) - Northern Kentucky Health Department

... It takes about four to six weeks from the time a person is exposed until symptoms develop ...
Genetics of Viruses and Bacteria
Genetics of Viruses and Bacteria

... DNA molecule in a bacterium. • Bacterium may have more than one ...
General Virology I
General Virology I

... nucleic acids and proteins that have the capacity for replication in animal, plant and bacterial cells. ¾ To replicate themselves, viruses use up functions of the host cells on which they are parasites. ¾ The viral parasite causes changes in the cell, particularly its antigenicity; moreover, directi ...
An enzyme inhibitor - Facultad de Bioquímica y Ciencias Biológicas
An enzyme inhibitor - Facultad de Bioquímica y Ciencias Biológicas

... important human pathogens, Corynebacterium difteriae and Clostridium tetani had been discovered, and a sterile filtrate which had been prepared from the fully grown culture had been observed to cause death when injected into experimental animals. What autopsies revealed was that these animals showed ...
Germs and Disease - International Scientific Forum on Home Hygiene
Germs and Disease - International Scientific Forum on Home Hygiene

... • Even among bacteria that can cause disease, only a few species are always pathogenic. Many free-living bacteria or members of the normal flora are potentially pathogenic in certain types of individual (particularly the immuno-compromised), but are most of the time harmless • Consumers tend to be v ...
Lab
Lab

... time. A pandemic is an epidemic of an infectious disease that is spreading throughout a whole country, continent, or even worldwide! In this simulation, you will see how quickly contagions can spread. Objective: To simulate, observe, and analyze the spread of contagious diseases through a ...
Bacteria & Viruses
Bacteria & Viruses

... immune system “learns” to kill – Pre-training your immune system so you don’t get the same disease again ...
Chapter 6 An Introduction to Viruses
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 ...
Emergence of new pathogens `Viruses`
Emergence of new pathogens `Viruses`

... – (1) promptly investigate and monitor emerging pathogens, the diseases they cause, and factors of emergence; – (2) integrate laboratory science and epidemiology to optimize public health practice; – (3) enhance communication of public health information about emerging diseases and ensure prompt imp ...
File
File

... material into a living cell The cell becomes the virus’ host. The virus DNA/RNA becomes a part of the cells DNA so that during cell division the virus is being replicated and passed on. Eventually the virus’ DNA takes over, completely changes the host cell/ kills it’s host cell and continues to repl ...
What is Photosynthesis?
What is Photosynthesis?

... enables entry into a host cell… • Viral genetic material “hijacks” host cell to produce new viral components • Viral components assemble rapidly into new viruses and burst from host cell ...
Antiviral Agents – Dr.Roshna
Antiviral Agents – Dr.Roshna

... Synthesis of early regulatory proteins, eg, nucleic acid polymerases; Synthesis of new viral RNA or DNA; Synthesis of late, structural proteins; ...
محاضرة 8
محاضرة 8

... Introduction to Virology • Recognizing the shape, size, and structure of different viruses is critical to the study of disease – Viruses have an inner core of nucleic acid surrounded by protein coat known as an envelope – Most viruses range in sizes from 20 – 250 nanometers ...
Slides - gserianne.com
Slides - gserianne.com

... • Viruses – Many can mutate within cells where they are not available to immune and inflammatory mechanisms – Not available to antibodies in circulation – Antigenic variations: • Antigenic drift – mutation in key surface antigens • Antigenic shifts – genetic recombination that changes antigenic prop ...
Sheet no.: Last year slides, Medical Virology
Sheet no.: Last year slides, Medical Virology

... Our body's response by the production of specific antibodies protects us (to some extent) from the infection by viruses, the SPECIFIC and the NON-SPECIFIC defense mechanisms are important. Now, viruses in the respiratory tract (for example: influenza virus), can establish the infection, but if we al ...
Chapter 18 and 31
Chapter 18 and 31

... Viruses cause many infectious diseases • There are many examples of viral infections. ...
Background Information - Arizona Science Center
Background Information - Arizona Science Center

... into contact with a suitable plant, animal or bacterial cell, they jump into action. They infect and take over the cell like pirates hijacking a ship, and their only mission to reproduce. Whatever a virus lives in is called its host. Unlike bacteria, most viruses do cause disease. Antibiotics do not ...
Microbiology
Microbiology

... c. The recipient cell has a different set of genes d. New combinations of genes increase the genetic diversity in that population of bacteria 2. Genetic diversity helps to ensure that even if the environment changes, a few bacteria may have the right combinations of genes to survive ...
In search of a Broad-spectrum anti
In search of a Broad-spectrum anti

... Essentially there is a lack of treatment options for viral threats, especially should a new, hitherto unknown virus become prominent. Vaccines take substantial time to develop, and most anti-viral agents are highly specific to only one virus and in targeting viral proteins place strong selection pre ...
Lesson Plan: Viruses and Evolution
Lesson Plan: Viruses and Evolution

... each kit contains a ball with a wedge-­­shaped opening, several pipe cleaners of different colors, and an assortment of pushpins of different shapes and colors. Tell students that the ball represents the protein coat of an individual virus, a pipe cleaner represents the RNA strand in the influenza v ...
Cells/Organelles Case - Project
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 ...
HIV Worksheet A Lead-in 1 Do you know what the letters
HIV Worksheet A Lead-in 1 Do you know what the letters

... In general, viruses have very small genomes, which means they can encode a very limited number of their own proteins. 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 the ...
< 1 ... 56 57 58 59 60 61 62 63 64 ... 82 >

History of virology



The history of virology – the scientific study of viruses and the infections they cause – began in the closing years of the 19th century. Although Louis Pasteur and Edward Jenner developed the first vaccines to protect against viral infections, they did not know that viruses existed. The first evidence of the existence of viruses came from experiments with filters that had pores small enough to retain bacteria. In 1892, Dmitry Ivanovsky used one of these filters to show that sap from a diseased tobacco plant remained infectious to healthy tobacco plants despite having been filtered. Martinus Beijerinck called the filtered, infectious substance a ""virus"" and this discovery is considered to be the beginning of virology. By the 20th century many viruses were discovered.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report