BIOLOGICAL CLASSIFICATION
PRIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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true
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false
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Either A or B
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None of the above
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Detailed explanation-1: -Glycoprotein spikes are found on the capsids of all viruses. Viruses are the only known infectious agents that are obligatory intracellular parasites. Binomial nomenclature is used to name viruses. A segmented genome can result in antigenic shift.
Detailed explanation-2: -A peplomer is a glycoprotein spike which are the subunits of viral envelope. These peplomeres will only bind to certain receptors on the host cell. They are essential for both host specificity and viral infectivity. So the correct answer is ‘viral envelope’.
Detailed explanation-3: -Like other coronaviruses, the SARS-CoV-2 genome encodes spike (S) glycoproteins, which protrude from the surface of mature virions. The S glycoprotein plays essential roles in virus attachment, fusion and entry into the host cell.
Detailed explanation-4: -Lipid envelopes are derived from the host cell. Whereas the envelope glycoproteins are virus encoded. However, there are sugars attached to the viral glycoproteins which often reflect the host cell that harboured the virus.