THE MOLECULAR BASIS OF INHERITANCE
VIRUSES AND PRIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
biochemical tests
|
|
|
morphology
|
|
|
nucleic acid
|
|
|
size
|
Detailed explanation-1: -The order of presentation of virus families and genera follows four criteria: (1) the nature of the viral nucleic acid; (2) the strandedness of the nucleic acid; (3) the use of a reverse transcription process (DNA or RNA); and (4) the positive or negative sense of gene coding on the encapsidated genome.
Detailed explanation-2: -While the agar media-based methods and biochemical tests are used for identifying bacteria and fungi, they aren’t developed for identifying virus and can only be used for organisms that are culturable.
Detailed explanation-3: -They are extremely small in size and simpler than bacteria. They are ultra-microscopic, which are visible only with an electron microscope. They are considered to be the organisms that live at the edge of living and non-living things. They are dependent parasites that cannot survive on their own.