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प्रश्न
Contagium vivum fluidum was proposed by ______.
विकल्प
D.J. Ivanowsky
M.W. Beijerinek
Stanley
Robert Hook
उत्तर
Contagium vivum fluidum was proposed by M.W. Beijerinek.
Explanation:
D.J. Ivanowsky (1892) discovered the virus and recognised certain microbes as the causal organisms of the mosaic disease of tobacco. M.W. Beijerinck (1898) demonstrated that the extract of the infected plants of tobacco could cause infection in healthy plants and called the fluid Contagium vivum fluidum (infectious living fluid). W. M. Stanley (1935) first time showed that viruses could be crystallised and crystals consist largely of proteins.
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संबंधित प्रश्न
Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
Virus can grow and multiply outside host.
Influenza is a _____ disease.
The infecting virus particle found outside the host cell is _______.
Match the following
| Swine flu | Human Papilloma virus |
| Genital warts | Human Immunodeficiency Virus |
| AIDS | Mycobacterium |
| Tuberculosis | Influeuza virus H1N1 |
Which one of the following statement about virus is correct
______ can kill damage or change the cells and make you sick.
Adenovirus is ______ virus.
Viruses are devoid of cellular organelles like ribosomes mitochondria, etc.
Influenza commonly occurs during adult age.
