Virus

virus
ultramicroscopic, virulent organism composed of a nucleoprotein core and a protein shell, which causes certain plant or animal diseases
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Viruses
Properties:
They are obligate intracellular parasites.
Probably there are no cells in nature that escape infection by one or more kinds of viruses. (Viruses that infect bacteria are called bacteriophages.) ...
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Viruses can be classified in several ways, such as by their geometry, by whether they have envelopes, by the identity of the host organism they can infect, by mode of transmission, or by the type of disease they cause.
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A particle consisting of a nucleic acid (RNA or DNA) genome surrounded by a protein coat (capsid) and sometimes also a membrane, which can replicate only after infecting a host cell. A virus particle may exist free of its host cell but is incapable ...
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Virus evolution is a subfield of evolutionary biology that is specifically concerned with the evolution of viruses.
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Viruses are composed of an inner nucleic acid core (genetic material) and an outer protein coat (capsid).
Viruses that infect animals have an outer envelope (membrane) that is derived from the cell membrane of the host cell may surround the capsid.
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A type of virus that contains RNA as its genetic material. The RNA of the virus is translated into DNA, which inserts itself into an infected cell's own DNA. Retroviruses can cause many diseases, including some cancers and AIDS.
explained: ...
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Viruses can also contribute to cancer by inserting their DNA into a chromosome in a host cell. Insertion of the virus DNA directly into a proto-oncogene may mutate the gene into an oncogene, resulting in a tumor cell.
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Virus
A small, infectious, obligate intracellular parasite. The virus genome is composed of either DNA or RNA. Within an appropriate host cell, the viral genome is replicated and uses cellular systems to direct the synthesis of other viral components.
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Viruses are usually quite specific as to their hosts and even to the types of cells they infect in a multicellular host.
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Virus: A particle consisting of a nucleic acid core surrounded by a protein coat. New virus particles can only be produced by a cell which is infected by the virus.
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virus
[L. slimy, liquid, poison]
A submicroscopic, noncellular particle composed of a nucleic acid core and a protein coat (capsid); parasitic; reproduces only within a host cell.
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viruses: Extremely small and simple life-forms, made merely of a protein shell and a genome. A virus reproduces by inserting its genome into the cells of other life-forms. As those cells duplicate, so does the virus.
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virus A submicroscopic noncellular particle composed of a nucleoprotein core and a protein shell; parasitic; will grow and reproduce in a host cell.
viscera Internal organs in the body cavity.
visceral arches See gill arches.
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Virus: A noncellular biological entity that can reproduce only within a host cell.
The Exploratorium, 3601 Lyon Street, San Francisco, CA 94123 ...
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virus: fragments of nucleic acid surrounded by a protein coat; may attack cells and replicate within the cells, destroying them.
vitamins: organic nutrients essential in trace amounts to the health of animals.
voluntary muscle: see striated muscle.
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Virus: Any of various submicroscopic pathogens which can only replicate inside a living cell.
Taken from:
Hoffmann, M.P. and Frodsham, A.C. (1993) Natural Enemies of Vegetable Insect Pests. Cooperative Extension, Cornell University, Ithaca, NY. 63 pp.
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viruses - obligate intracellular parasites that require the host cell's biochemical machinery to drive protein synthesis and metabolize sugars.
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virus. A very small organism that can multiply only within living cells of other organisms and is capable of producing disease symptoms in some plants and animals.
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Virus. An infectious particle composed of a protein capsule and a nucleic acid core, which is dependent on a host organism for replication.
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Virus: A noncellular biological entity that can reproduce only within a host cell. Viruses consist of nucleic acid covered by protein; some animal viruses are also surrounded by membrane.
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virus
the smallest organism known, ranging in size from about 0.025-0.25 um. Viruses infect cells of bacteria, plants , and animals, and while they carry out no metabolism themselves, they are able to control the metabolism of the infected cell.
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A virus for which the natural host is a bacterial cell. Used as a vector for cloning segments of DNA.
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: A virus that infects a bacterium.
Balanced lethal
: Lethal mutations in different genes on the same pair of chromosomes that remain in repulsion because of close linkage or crossover suppression.
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phage - viruses for microorganisms
photosynthesis - use of light to carry out reductive biochemical processes necessary for life. Pigments capture light energy in much the same way as an antenna captures a radio or tv signal.
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Certain viruses have the ability to insert a copy of themselves into the genome of a host. The chemical that make this possible (reverse transcriptase) is widely used in genetic engineering.
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phage - virus that infects bacteria; altered phage can be used as cloning vectors. (short for bacteriophage - "bacteria eater") ...
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An E. Coli virus. Commonly used bacteriophases in biology labs are T4, M13 and lambda phages.
Related
Vector ...
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bacteriophage -- Virus which infects and destroys a bacterial host. Some phages, however, will incorporate their DNA into that of their host, and remain dormant for an extended period.
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BACTERIOPHAGE - A virus that infects bacteria; often simply called a phage. The phages which are most often used in molecular biology are the E. coli viruses lambda, M13 and T7.
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Any foreign substance, such as a virus, bacterium, or protein, that elicits an immune response by stimulating the production of antibodies. (See Antigenic determinant, antigenic switching.) Antigenic determinant.
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Bacteriophage -- a virus whose host is a bacterium; commonly called phage. Barr body -- the condensed single X-chromosome seen in the nuclei of somatic cells of female mammals.
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capsid The protein coat of a virus particle. carbanion A negatively charged carbon atom. carbocation (AKA) carbonium ion A positively charged carbon atom.
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In the adenovirus E3 mRNA polyadenylated sites are 17, 26 or 29 nucleotides beyond AATAAA. Where several alternative polyadenylation sites are found, preference is governed by a third sequence element upstream of AAUAAA.
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Bacteriophage Bacterial virus. Lambda bacteriophage is the basis of many E. coli vectors which are used for cDNA and genomic DNA libraries. Filamentous bacteriophages are used to produce single-stranded DNA for sequencing or in vitro mutagenesis (eg.
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The "mosaic virus" is carried by peach potato aphids, "myzus persicae", an insect common to European gardens of the seventeenth century, in which peach trees were often a prominent feature.
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Oncogene: A gene in a tumor virus or in cancerous cells which, when transferred into other cells, can cause transformation (note that only certain cells are susceptible to transformation by any one oncogene).
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the formation of coats by monitoring the incorporation of fluorescently tagged clathrin or its adaptor AP-2 (adaptor protein 2), and have followed clathrin-mediated uptake of transferrin, single LDL (low-density lipoprotein) and single reovirus ...
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A linear end-to-end arrangement of genes and other DNA, sometimes with associated protein and RNA. The form of the genetic material in viruses and cells.
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Bacteriophage a type of virus that invades lives in and kills a host species of bacterium
(phago = to eat) ...
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even after the leech has been removed -- an experiment that emerged from the life experiences of some of Haugen's immigrant students. The students then send E-mail messages to scientists to see whether it is known if leeches can spread the HIV virus.
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A fourth Draft BioCode was published in 1997 in an attempt to standardize naming in the three areas, but it does not appear to have yet been formally adopted. The International Code of Virus Classification and Nomenclature (ICVCN) remains outside ...
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