Viruses are sometimes confused with worms and trojan horses, which are technically different a worm can exploit security vulnerabilities to spread itself automatically to other computers through networks, while a trojan horse is a program that appears harmless but hides malicious functions. Essay # 8 assay of viruses: reasons: assay of viruses, the accurate determination of concentration, is a basic and primary pre-requisite for many reasons which are the followings: 1.
Free essay: a computer virus program is altering program and it replicated itself by coping itself into other programs stored in a computer the word. Disclaimer: this essay has been submitted by a student this is not an example of the work written by our professional essay writers this is not an example of the work written by our professional essay writers. Thus, viruses are structures which have below the level of cellular organization and do not have structures like cytoplasm, nucleus and chromosomes etc the only thing they have in common with the living organisms is the occurrence of proteins and nucleic acids, dna and rna but never both.
A virus is an ultramicroscopic infectious organism that, having no independent metabolic activity, can replicate only within a cell of another host organism a virus consists of a core of nucleic acid, either rna or dna, surrounded by a coating of antigenic protein and sometimes a lipid layer surrounds it as well. Here is your essay on computer viruses the age of information has essentially made communication faster with advent of computer and internet human interaction has revolutionized with information including data, pictures, emails, programs etc being sent within milliseconds from one part of the world to another.
Virus essay a virus is a microorganism that cannot reproduce without a host as a result of this, there has been a lot of controversy on whether or not a virus is a living or non-living organism.
Our service can write a custom essay on viruses and bacteria for you structure of a bacterium cell is the following: there is a dna (nucleoid) surrounded by cytoplasm and ribosomes there is a mesosome and plasma membrane, cell wall and bacterial flagellum. Essay # 2 size of viruses: viruses are very small ultra-filterable and ultramicroscopic structures the average size of viruses ranges between the smaller bacterium and the largest protein molecule the foot and mouth disease virus is the smallest animal virus approximately 10 nm in size (fig 1.
Viruses are no cellular, ultramicroscopic structures of proteins and nucleic acids which grow and multiply only in the living cells they are obligate parasites they cause highly infectious diseases to animals including human beings, angiosperms, bacteria and fungi. Disclaimer: this essay has been submitted by a student this is not an example of the work written by our professional essay writers you can view samples of our professional work here any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do.
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This virus when examined with the electron microscope using x-rays, is found to be in the form of bundles of rod-like protein such nucleoprotein cannot be obtained from healthy plants and is the virus itself.