Question

The adhesion properties of viruses are determined by:
(a) Proteins that make up their coats and envelop
(b) Viral DNA that they contain
(c) Viral RNA that they contain
(d) Viral Genomes that they contain​

Answer 1

The adhesive properties of viruses are contributed by the cell surface proteins and envelopes. So the correct option is A) Proteins that make up their coats and envelop

Viral surface proteins

• As committed intracellular parasites, viruses should navigate the host-cell plasma layer to start the disease. This presents a considerable hindrance, so they have developed different procedures to survive. Normal to all passage pathways, nonetheless, is a component of explicit connection to cell-surface macromolecules or 'receptors'. Receptor use habitually characterizes viral tropism, and thus, the developmental changes in receptor explicitness can prompt the rise of new strains showing adjusted pathogenicity or host range. A few classes of particles are taken advantage of as receptors by different gatherings of viruses. including, for instance, sialic corrosive moieties and integrins. Specifically, numerous phone bond atoms that have a place with the immunoglobulin-like superfamily of proteins (IgSF CAMs) have been recognized as viral receptors. Underlying examination of the cooperations among infections and IgSF CAM receptors has not shown restricting to explicit highlights, inferring that the Ig-like overlay may not be critical.
• Both proteinaceous and enveloped viruses exploit these proteins, notwithstanding, recommending merged advancement of this characteristic. Their utilization is amazing given the normally impeded position of CAMs on the cell surface, for example, at tight intersections. Regardless, the justification for their far-reaching contribution to viral passage most likely starts in their practice as opposed to primary attributes.

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Answer 2

Answer:

The adhesion properties of viruses are determined by proteins that make up their coats and envelop.

Explanation:

• The virus is made up of two main components:

1. Capsid
2. Nucleic Acid

• The capsid is the outer protein coat that surrounds nucleic acid.
• The capsid is in close contact with the nucleic acid and is hence known as the nucleocapsid.
• Some of the viruses have an outer covering called an envelope. Such viruses are called enveloped viruses while the other viruses without envelopes are called naked viruses.
• The capsid is made up of several identical subunits known as capsomers that contain attachment proteins unique to cellular receptors.
• This interaction between the attachment protein and specific cellular receptors determines the host range.
• Host range is crucial in viral attachment as it is a specific binding between attachment proteins and cellular receptors.
• If the host range is narrow, the virus can infect only a small number of cell types and if the host range is broad, the virus can infect a large number of cell types.

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