Write the characteristics of viruses std viith stateboard
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Virus :
The name 'Virus' means vinom or poisonous fluid. It was given by Pasteur. In 1892, D. J. Ivanowsky recognized certain microbes which cause mosaic disease of tobacco. These were found to be smaller than bacteria because they passed through the filters that were bacteria-proof.
Viruses did not find place in classification since they are not truely living. They don't have cellular structure. Viruses are considered as connecting link between living and non living organisms. We know that molecules inside cell always show some movement. Molecular movement takes place even when we are sleeping. But, viruses do not show any molecular movement. That is why it has been controversial whether viruses are living or non living.
Viruses are non cellular as mentioned as above. They have inert crystalline structure outside the living cell. They infect the host cell and use their machinery to replicate thereby killing the host cell.
As viruses use our cell machinery. So, antibiotics are not effective against them. We have to kill our cells if we want to kill or stop from replicating the virus. In 1935, W. M. Stanley showed that crystals of viruses mainly consist of proteins. In addition to it, they also contain genetic materials that could be either DNA or RNA. No virus contains both DNA and RNA. The nucleic acid is protected by a protein called capsid which is made up of small sub units of capsomeres. Viruses are the cause of diseases like cold, influenza, chicken pox, etc. The deadly diseases like AIDS and hepatitis B are also caused by virus.
Hope It Helps
Here is your answer with full explanation.
Virus :
The name 'Virus' means vinom or poisonous fluid. It was given by Pasteur. In 1892, D. J. Ivanowsky recognized certain microbes which cause mosaic disease of tobacco. These were found to be smaller than bacteria because they passed through the filters that were bacteria-proof.
Viruses did not find place in classification since they are not truely living. They don't have cellular structure. Viruses are considered as connecting link between living and non living organisms. We know that molecules inside cell always show some movement. Molecular movement takes place even when we are sleeping. But, viruses do not show any molecular movement. That is why it has been controversial whether viruses are living or non living.
Viruses are non cellular as mentioned as above. They have inert crystalline structure outside the living cell. They infect the host cell and use their machinery to replicate thereby killing the host cell.
As viruses use our cell machinery. So, antibiotics are not effective against them. We have to kill our cells if we want to kill or stop from replicating the virus. In 1935, W. M. Stanley showed that crystals of viruses mainly consist of proteins. In addition to it, they also contain genetic materials that could be either DNA or RNA. No virus contains both DNA and RNA. The nucleic acid is protected by a protein called capsid which is made up of small sub units of capsomeres. Viruses are the cause of diseases like cold, influenza, chicken pox, etc. The deadly diseases like AIDS and hepatitis B are also caused by virus.
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