THE MOLECULAR BASIS OF INHERITANCE
THE GENETICS OF VIRUSES AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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nucleic acid strand surrounded by a protein coat
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a tail surrounded by a protein coat
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a tail surrounded by a carbohydrate coat
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nucleic acid strand surrounded by a carbohydrate coat
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Detailed explanation-1: -The simplest virions consist of two basic components: nucleic acid (single-or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
Detailed explanation-2: -Viral Structure. In the simpler viruses the virion consists of a single molecule of nucleic acid surrounded by a protein coat, the capsid; the capsid and its enclosed nucleic acid together constitute the nucleocapsid.
Detailed explanation-3: -Definition. A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat.
Detailed explanation-4: -1. Helical Capsid Structure. Each virus possesses a protein capsid to protect its nucleic acid genome from the harsh environment. Virus capsids predominantly come in two shapes: helical and icosahedral.
Detailed explanation-5: -Capsid-Nucleic acid is enclosed in a shell of proteins called a capsid. Proteins are arranged in subunits known as capsomeres and then tightly integrated within nucleic acid giving it a shape of polygon-like sphere or a helix.