Professional morphology viruses editable powerpoint template. Viral evolution, morphology, and classification biology ii. Viruses are infectious particles and they are obligat. Viral evolution, morphology, and classification boundless. Features of these morphology viruses powerpoint presentation templates.
The life cycle of the virus is a series of steps that enable the virus to infect a host and replicate itself. Viruses do not posses cellular organization and they do not fall strictly in to the category of unicellular microorganism. Morphology of viruses the chemical constituents described in the previous chapter are found in particles of diverse size and shape in the various viruses isolable from animals, bacteria, plants, and fungi. Viruses are noncellular, meaning they are biological entities that do not have a cellular structure. The formal taxonomic classification of viruses is the responsibility of the international committee on taxonomy of viruses ictv system, although the baltimore. The headtail morphology structure is unique to viruses that only infect bacteria and are known as bacteriophages. General morphology capsid structure determines shape.
Winner of the standing ovation award for best powerpoint templates from presentations magazine. A virion consists of a nucleic acid core, an outer protein coating or capsid, and sometimes an outer envelope made of protein and phospholipid membranes derived from the. This new group of ibvlike viruses came to be known as coronaviruses after their distinctive morphological appearance. A virus is an infectious nonliving particle that cannot survive on its own. In humans, these viruses cause respiratory tract infections that can range from mild to lethal. Hbv is the only hepatitis virus that contains dna as genetic material.
The bacteriophage uses its tail to attach to the bacterium, creates a hole in the cell wall, and then inserts its dna into the cell using the tail as a channel. Structures of viruses of different families are separated into groups on the basis of. Morphology and structure of viruses microbiology with sumi. Morphology viruses ppt template can also be used for topics like filovirus,helical,complex,bacteria,herpes,envelope,human,common cold, etc. The viral parasite causes changes in the cell, particularly its antigenicity. This is mainly due to the pseudoliving nature of viruses, which is to say they are nonliving particles with some chemical characteristics similar to. Microbiologyvirologyimmunologybacteriologyparasitology. Give your memorable bacteria and viruses presentation and build your crawd.
Bacteria can be found virtually everywhere on earth. Thus, for example, a grouping into enteric viruses, respiratory viruses and viruses transmitted by arthropods segmented invertebrates, e. Some bacteria can cause diseases for human, animals and plants. Hepatitis b virus hbv morphology, clinical features. Similar to the classification systems used for cellular organisms, virus classification is the subject of ongoing debate and proposals. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Morphology of bacterial cell microbiology with sumi. Virus morphology free download as powerpoint presentation. Bacteria and viruses powerpoint ppt presentation slides. Bacteria under the microscope morphology, discussion. Microbiological classification of infectious diseases. Morphology of a bacterial cell is systematic arrangement of bacterial cell.
Jan 15, 2020 viruses range from the structurally simple and small parvoviruses and picornaviruses to the large and complex poxviruses and herpesviruses. Aug 26, 2017 morphology of bacterial cell microbiology with sumi. Despite the diversity of size and shape of different viruses, the size and shape of any one virus tend to be much more uniform than do the cells of a bacterium. Virus classification is the process of naming viruses and placing them into a taxonomic system. The virus is much simpler than the bacterial cell, consisting of a core of nucleic acideither deoxyribonucleic acid dna or ribonucleic acid rnaenclosed in a protective membrane of protein called the capsid. The size and fine structure of cytomegalovirus was compared with that of herpes virus. Viruses come in many shapes and sizes, but these are consistent and distinct for each viral family. Eukaryote cell difference between prokaryotic and eukaryotic cells. In this article we will discuss about the morphology and replication of influenza virus. Mild illnesses include some cases of the common cold which is caused also by certain other viruses, predominantly rhinoviruses, while more lethal varieties can cause sars, mers, and covid19.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The high concentration at which certain viruses occur in infected plants and their relative stability was crucial in the first isolation and chemical characterisation of. Some viral capsids are simple polyhedral spheres, whereas others are quite complex in structure. Structure of bacterial cell microbiology with sumi.
This means that they can be found in the soil, in oceans and other water bodies, rocks, on plants and even in the artic. Structurally, the protozoa resemble other eukaryotic cells and possess a cytoplasmic membrane that encloses cytoplasm containing membranebound nuclei, mitochondria, 80s ribosomes and a variety of organelles. Microbiology powerpoint 2 bacterial morphology and structures. The ibvlike novel cold viruses were soon shown to be also morphologically related to the mouse hepatitis virus. The head of the virus has an icosahedral shape with a helical shaped tail. Viruses are infectious particles about 100 times smaller than bacteria and can only be observed by electron microscopy. View and free download bacteria and viruses powerpoint ppt presentation slides. Jul 03, 2017 general morphology capsid structure determines shape. The morphology of a virus is determined by the arrangement of the protomeres.
Viral evolution, morphology, and classification biology 2e. Classification of virus virology online microbiology notes. Explore virus structure, structure of virus, viral structure types, and functions of virus structure. Instant download attractive subscription prices premium quality presentation templates on affordable price mac and keynote compatible. Antigenic differences exhibited by two of the internal structure proteins np and m, are used to divide influenza viruses into types a, b and c. Virus structure forms of viruses virus structure types. Hbv causes type b hepatitis, the most widespread and the most important type of viral hepatitis. Note in this video i have mistakenly mentioned that viruses are unicellular in nature sorry for that. This method of classifying viruses still has a certain relevance regarding the syndromes and epidemiology of virus diseases. Respiratory viruses enteroviruses gastrointestinal viruses hepatitis virus flavivirus hemorrhogic fever virus herpes virus retrovirus rabies virus prion human immunodeficiency virus 26 slides, 1. Apr 01, 2018 note in this video i have mistakenly mentioned that viruses are unicellular in nature sorry for that.
Despite the diversity of size and shape of different viruses, the size and shape of anyone virus tend to be much. Heli cal morphology is seen in nucleocapsids of many. Morphology of bacterial cell microbiology with sumi youtube. Introduction to viruses classification, morphology and structure, replication and pathogenicity classification of viruses morphology and structure naked viruses non enveloped replication pathogenicity transmission of viruses virus tissue tropism. The capsid is made up of protein subunits called capsomeres. Characters of viruses size of viruses shape of viruses structure of viruses it consist of capsid, nucleic acid and envelop. The morphology of protozoa varies widely and includes oval, spherical and elongated cells that can range in size from 510 to 12 mm. Start studying microbiology powerpoint 2 bacterial morphology and structures. Viruses are classified on the basis of morphology, chemical composition, and mode of replication. Morphology of cytomegalovirus salivary gland virus. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Coronaviruses are a group of related rna viruses that cause diseases in mammals and birds. Coronaviruses are found in avian and mammalian species. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
Lets see morphology and structure of viruses in detail. That is, viruses infect specific cells or tissues of specific hosts, or specific bacteria, or specific plants. To replicate themselves, viruses usurp functions of the host cells on which they are parasites. This free morphology viruses medical ppt is one of the free medical powerpoint templates available for medical and healthcare professionals on. Morphology definition of morphology by merriamwebster. Contents definition of viruses discovery of viruses concept of viruses characteristics of viruses structure of viruses symmetry of viruses classification of viruses. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. In the past, viruses were classified by the type of nucleic acid they contained, dna or rna, and whether they had single or doublestranded nucleic acid. Bacterial morphology and structure is the property of its rightful owner. Viruses are the smallest known infective agents and perhaps the simplest form of life. Of the 3 strains of wild poliovirus type 1, type 2, and type 3, wild poliovirus type 2 was eradicated in 1999 and no case of wild poliovirus type 3 has been found since the last reported case in nigeria in november 2012. Morphology and structure of viruses general microscience. Because of its minute size, a virus must be studied with the electron microscope. Human coronavirus 229e and human coronavirus oc43 continued to be studied in subsequent decades.
Cytomegalovirus stains as a dna virus and is almost identical in size to herpes virus. This figure shows three relatively complex virions. Virology is the study of viruses, complexes of nucleic acids and proteins that have the capacity for replication in animal, plant and bacterial cells. These spikes have enzymatic, absorptive, hemagglutinating andor antigenic activity. In animals, various coronaviruses invade many different tissues and cause a variety of diseases, but in humans. They resemble each other in morphology and chemical structure. There is no evidence, however, that human coronaviruses can be transmitted by animals. They therefore lack most of the components of cells, such as organelles, ribosomes, and the plasma membrane.
Baylor university college of medicine, houston, texas and lucy rasmussen. If so, share your ppt presentation slides online with. Viruses range from the structurally simple and small parvoviruses and picornaviruses to the large and complex poxviruses and herpesviruses. The biochemicalphysical age started in the early 1930s. It is an enveloped virus possessing genome segmented into eight linear single stranded molecules ranging in size from 890 to 2341 nucleotides. Microbiology powerpoint 2 bacterial morphology and. Viruses are mainly classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause. It can be found in soil, air, water, and living bodies.
The viruses that infect humans are currently grouped into 21 families, reflecting only a small part of the. A virion consists of a nucleic acid core, an outer protein coating or capsid, and sometimes an outer envelope made of protein and phospholipid membranes derived. Proteins associate into structural units this is what we see in the electron microscope or when we start to disassociate a capsid, the structural. Virus is a smallest infectious particle, unicellular, obligate intracellular parasite. More recent studies have shown that they are even found in some of the most extreme environments such as the dead sea and other extremely hot areas. Ppt virus structure powerpoint presentation free to. Virions, single virus particles, are 20250 nanometers in diameter. The chemical constituents described in the previous chapter are found in particles of diverse size and shape in the various viruses isolable from animals, bacteria, plants, and fungi. Morphology and structure of viruses microbiology with. Helical viruses nucleic acid is inside a hollow cylindrical capsid with a helical structure rabies, ebola viruses, tobacco mosaic virus polyhedral viruses many sided. Microbiology module morphology and classification of bacteria microbiology 2 notes zmost bacteria possess peptidoglycan, a unique polymer that makes its synthesis a good target for antibiotics zprotein synthesis takes place in the cytosol with structurally different ribosomes fig. Viruses are grouped on the basis of size and shape, chemical composition and structure of the genome, and mode of replication.
Introduction to viruses classification, morphology and structure, replication and pathogenicity classification of viruses morphology and structure. Enveloped viruses have glycoprotein spikes arising from their envelope. Jun 08, 2019 a virus is an infectious nonliving particle that cannot survive on its own. In this article we will discuss about bacteriophage. Free morphology viruses medical powerpoint template for. Symmetry of viruses viruses are divided into three groups, based on the morphology of the nucleocapsid and.
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