Biology Virus Essay

Biology com ensnareer computer virus Essay A virus is a microorganism that cannot reproduce without a boniface. As a resolvent of this, there has been a lot of dispute on whether or not a virus is a aliveness or non- spirit organism. The dictionary. com definition for life is, the condition that distinguishes organisms from inorganic objects and dead organisms, creation manifested by growth done metabolism, reproduction, and the power of adaptation to environment with changes originating internally. Viruses have characteristics of some(prenominal) spiritedness and non-living organisms, for example, a living characteristic includes reproduction. A non-living characteristic of a virus is that they cannot have both deoxyribonucleic acid and RNA. The living characteristics of viruses state that viruses can reproduce, but viruses can only reproduce with the armed service of a host. As a result of viruses not being fitted to replicate on their own, viruses ar not living organ isms. Viruses are downhearted defileious particles that have nucleic acrid.They can come in many distinct shapes and sizes. Although viruses vary in shape the common virus has four primary(prenominal) parts, the head, desoxyribonucleic acid or RNA, tail sheath, and tail fiber. The head of a virus is a protein shell that protects the desoxyribonucleic acid inside it also known as the genome. In comparison, viruses and living organisms both are do up of small units that form up to make something larger. The physical appearance of a virus and living organisms are dissimilar and what a virus is made up of is different in comparison to a living organism.Viruses are made up of proteins and nucleic acid. The protein comes together to form an encasing shell for the nucleic acid. The protein shell is called a capsid. The nucleic acid inside a capsid can either be desoxyribonucleic acid or RNA, but never both. Viruses can be classified depending on the features they have, for example the various shapes of a capsid can determine the character reference of virus. A capsid can be a simple or complex structure. The most complex capsid is found in bacteria called bacteriophages.A virus can also have a viral envelope which contains protein and lipids. Based on shape and structure viruses can infect bacteria, animals and plants. The way in which viruses can infect theses organisms is different. The viruses that infect bacteria are the most common. The life cycle of viruses that infect bacteria are put into two categories known as the lysogenic and lytic cycles. In the lytic cycle, the virus injects its DNA or RNA into the bacteria and makes the bacteria create all the different components that form an entire virus.These parts come together to create psyche viruses and as a result of this mass production of individual viruses, the cubicle bursts. Viruses that go through the lytic cycle are called virulent phages. Phages that go through the lysogenic cycle are known a s temperate phages. In the lysogenic cycle the virus injects its DNA or RNA into the host in the same way as the lytic cycle does except the injected DNA or RNA sits and stays inside the host. As a result the virus doesnt create more individual viruses and the hosts cell doesnt burst.Although the nucleic acid sits and stays inside the genome, a answer could occur and the virus could go from the lysogenic to the lytic cycle. In conclusion, viruses have characteristics of both living and non-living organisms. Like non-living organisms, viruses cant have both DNA and RNA. They can reproduce like living organisms but that is with the help of a host. Without the help of a host viruses cant perform the characteristics of a living organism. Due to the lack of living characteristics, this shows that viruses are not living organisms.