Period 7 Are Viruses Alive? For many years there have been numerous controversies over whether a virus should be classified as living or nonliving. It is believed that viruses are considered nonliving because they lack a substantial amount of qualities to be classified a form of life and they are incapable of carrying out all life processes. For example‚ some characteristics that would justify a virus being nonliving would be that they are acellular: they are not made up of cells nor do they contain
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Contents 1 Introduction 3 1.1 What is Fish Disease 3 2 Viral diseases present 3 2.1 Freshwater species only 3 2.1.1 Herpesvirus salmonis 3 2.1.2 Channel catfish virus 4 2.1.3 Epithelioma papillosum 4 2.1.4 Infectious Pancreatic Necrosis 5 2.1.5 Koi Herpes virus 5 2.1.6 Spring Viraemia of Carp and Swim Bladder Infection Virus 6 2.2 Both Freshwater and Marine species 6 2.2.1 Viral Haemorrhagic septicaemia 6 2.2.2 Lymphocystis 7 2.2.3 Infectious Hematopoietic Necrosis 7 Bibliography 8
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RABIES Abstract: Each year‚ approximately 55‚000 individuals worldwide die from an infection due to the rabies virus. Rabies is a life-threatening disease caused by an RNA virus that is usually transmitted to humans through bites from rabid animals. More recently‚ reports of transmission by means of organ transplantation have been reported. Since human rabies is nearly 100% fatal if prophylactic measures are not followed‚ an increased awareness of who should receive prophylaxis and
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Food Borne Illness In my findings of the virus known as Norovirus‚ it is also referred to as Gastroenteritis. The virus is caused by influenza. The Norovirus affects thousands of people every year according to the Centers for Disease Control (CDC). The Norovirus is a member of a category known as Calcivirus family. The virus is made up of four groups. The Norovirus is the most important virus to human pathogens. According to scientist the Calcivirus is difficult to study due to their
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1. EGG INOCULATION The fertile hen’s egg can be used to cultivate and propagate various types of viruses. Because of the ability to alter their tropism and to adapt to a new host species‚ many viruses become capable of growing in chick embryo tissues wherein they frequently attain a much higher concentration than in the tissues of the natural host. STRUCTURE OF AN EGG The extra-embryonic membranes of the chick embryo arise from three germinal layers: the endoderm‚ mesoderm and ectoderm
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bacteriophage? Kind of virus that infects bacteria. 2. What are viruses? Particle made of proteins‚ nucleic acid and sometimes lipids that can only replicate by infecting other cells. 3. What is a capsid? Protein coat surrounding a virus 4. How does a typical virus get inside a cell? Capside proteins 5. What occurs when viruses get inside cells? Virus genes are expressed 6. Identify the parts of the virus as seen in the picture below
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Viruses: Structure A virus particle‚ also known as a virion‚ is essentially a nucleic acid ( HYPERLINK "http://biology.about.com/od/geneticsglossary/g/DNA.htm"DNA or RNA) enclosed in a protein shell or coat. Viruses are extremely small‚ approximately 15 - 25 nanometers in diameter. Viruses: Genetic Material Viruses may have double-stranded DNA‚ double-stranded RNA‚ single-stranded DNA or single-stranded RNA. The type of genetic material found in a particular virus depends on the nature and function
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Chimpanzee Droppings Lead Scientists to Evolutionary Discovery by Erica F. Kosal‚ Biology Department‚ North Carolina Wesleyan College Part I—Chimpanzee Behavior Far in the remote western African jungles of Cameroon‚ Dr. Beatrice Hahn and her team of scientists from the University of Alabama have been examining chimpanzee droppings. Members of the great ape family‚ chimpanzees typically travel in groups of to animals‚ forming smaller subgroups to forage during the day and then coming together
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Since smallpox disease was eradicated many human pox viruses have emerged .Monkeypox received most of the attention. Monkeypox is an infection zoonotic disease caused by the Monkeypox virus which it is a member of the family ’Poxviridiea. The disease is located mostly in Central and West Africa. The reason of why is the disease named as "Monkeypox" is because scientists discovered it first in a type of monkey in a laboratory in Copenhagen‚ Denmark in 1958. The scientists found that the clinical symptoms
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The smallpox virus was once one of the most feared diseases in the world‚ and for good reason. Variola was a contagious virus that caused fever and painful‚ pus filled blisters all over the body. Victims had about a one fourth chance of survival‚ and survivors were covered with small‚ pitted scars and sometimes blinded or arthritic. Popping sporadically up in various civilizations‚ smallpox left a trail of destruction through two thousand plus years of mankind’s history. The story of smallpox is
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