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19.1 General Properties of Viruses
Viruses are not living particles.
They don't have key properties associated with living organisms.
By themselves, Viruses do not use energy, carry out metabolism, or reproduce.
A living cell takes up a virus or its genetic material.
TMV was the first virus to be discovered.
Microbiologists, geneticists, and German chemist Adolf Mayer determined in 1884 that this disease could be spread by spraying the sap from one plant onto another.
Russian scientist Dmitri Iva will discuss their general properties by subjecting this sap to filtration.
Researchers studied the disease after many generations of plants.
There were over 4,000 different types of viruses.
Small size and reliance on a liv the disease agent was multiplying in the plant were some of the similarities found in the results.
Around the same ing cell for replication, they vary greatly in their characteristics, time, and host range.
The characteris virus, which causes yellow fever, was identified after some of the major differences were described.
Several of the viruses listed in this table are found in different strains that have different size and number of genes.
The values reported in this table are typical.
The kilobase is 1,000 bases.
Viruses and bacterium are very different.
The gastrointestinal tracts have an average diameter of 75 nm.
There are a few examples of viruses with 50 million adenoviruses that could fit in a human cell.
There is a broad host range.
Capsids are made of one cies.
A virus can only affect a specific cell type in capsomers.
Host species of capsid
Viruses can't be solved by a polyhedral capsid.
The best light microscope has a terminal knob.
The corners of the polyhedral capsid were where the viruses were found.
The envelope is from 20 to 400 nm in diameter.
The capsid and envelope allow viruses to get to their hosts.
They bind to the surface of a host cell.
The variola virus can be injected into a host cell.
Mononucleosis types of viruses are suggested by the examples in Table 19.1.
The nucleic acid of some viruses is not the same as the nucleic acid of others.
All living organisms use DNA.
Depending on the type of virus, the genome can be either linear or circular.
There are some viruses that have more than one copy of the genome.
The examples in this figure show how most viruses cause disease in humans.
Vaccines and drugs have been developed to help prevent the spread of Viruses.
nucleic acid is surrounded by a capsid.
They may or may not have an outer envelope.
The goal of the challenge is to create a model for the entry of adenoviruses into a cell.
The capsid of an adenoviruses is a key part of the process of getting the virus into a cell.
The coxsackieviruses and adenoviruses can be seen on the surface of the host cell thanks to the binding of the protein fiber with a knob.
The capsid proteins play a role in allowing the virus to enter the cytosol by breaking through the vesicle.
The capsid breaks apart, releasing the viral DNA that enters the nucleus and providing the information to make thousands of new viruses.
The entry of viral DNA into the cell nucleus should be included in your model.
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