THE MOLECULAR BASIS OF INHERITANCE
CLONING GENES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE:Viruses can cause a wide range of infections.
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FALSE:Scientists have discovered ways of using viruses as tools in reasearch
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Detailed explanation-1: -Two scientists contributed to the discovery of the first virus, Tobacco mosaic virus. Ivanoski reported in 1892 that extracts from infected leaves were still infectious after filtration through a Chamberland filter-candle.
Detailed explanation-2: -Viruses were first discovered after the development of a porcelain filter, called the Chamberland-Pasteur filter, which could remove all bacteria visible in the microscope from any liquid sample.
Detailed explanation-3: -Which of the following statements about viruses is FALSE?-Viruses contain DNA or RNA but never both.
Detailed explanation-4: -Some viruses cause completely benign conditions such as the common cold, whereas others can be life-threatening, as in the case of COVID-19. Viruses, by and large, are nasty little organisms. Biologically, they are relatively simple, consisting of nothing more than bits of genetic material wrapped in a protein coat.