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20 sided ( or facets)

vertex (12 evenly spaced corners)

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14y ago
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6mo ago

The icosahedral structure of a virus is a symmetrical arrangement of 20 equilateral triangles that form a roughly spherical shape. This structure is highly stable and efficient for packaging the viral genome within the protein capsid. The icosahedral symmetry allows viruses to maximize their genetic material while maintaining structural integrity.

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Q: Brief introduction of icosahedral structure of virus?
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What is viral morphology?

Viral morphology refers to the size, shape, and structure of a virus particle. It encompasses characteristics such as the presence of an outer envelope, the type of genetic material (DNA or RNA), and the symmetry of the virus particle (e.g. helical, icosahedral). Understanding viral morphology is important for identifying and classifying viruses.


What is the structure of a typical virus?

A virus is basically DNA or RNA (single- or double-stranded)surrounded by a protein capsule. Typically the protein coat, or capsid, of an individual virus particle, or virion, is composed of multiple copies of one or several types of protein subunits, or capsomeres. Some viruses contain enzymes, and some have an outer membranous envelope. Many viruses have striking geometrically regular shapes, with helical structure as in tobacco mosaic virus, polyhedral (often icosahedral) symmetry as in herpes virus, or more complex mixtures of arrangements as in large viruses, such as the pox viruses and the larger bacterial viruses, or bacteriophages . Certain viruses, such as bacteriophages, have complex protein tails. The inner viral genetic material -the nucleic acid- may be double stranded, with two complementary strands, or single stranded; it may be deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). The nucleic acid specifies information for the synthesis of from a few to as many as 50 different proteins, depending on the type of virus.


What is the structure of a virus like?

Viruses are ranges in different sizes and structures. HIV, HBV, influenza are all spherical in shape. Phages like T phages carry an icosahedral structures. M13 phages, ebola appear as hair like (or tube) structures. TMV appears as rod like structure.


Draw the structure of bacteriophage virus?

A bacteriophage virus is composed of a protein capsid that encloses its genetic material, which can either be DNA or RNA. The capsid is made up of protein subunits called capsomeres arranged in a helical or icosahedral structure. Some bacteriophages also have a tail structure used for attaching to and infecting bacterial cells.


Is adenavirus and RNA virus?

No, adenovirus is a DNA virus, not an RNA virus. It infects humans and animals, causing various illnesses such as respiratory infections, conjunctivitis, and gastroenteritis.

Related questions

Is the TMV virus isosahedral virus?

Yes, the Tobacco mosaic virus (TMV) is indeed an icosahedral virus. It is a rod-shaped virus composed of helical protein subunits, which are arranged in a spiral that forms an icosahedral structure.


What is structure viruses?

A virus has a protein coat called a capsid with either DNA or RNA inside. A virus can have one of three structures. These are: 1. Helical virus. A helical virus is rod- or thread-shaped. The virus that causes rabies is a helical virus. 2. Icosahedral virus. An icosahedral virus is spherically shaped. Viruses that cause poliomyelitis and herpes simplex are icosahedral viruses. 3. Polyhedral Cylindrical shapes: Tobacco mosaic virus Wheat streak virus Hepatitis C


What is the general shape of viruses?

A virus can have one of two structures. These are: •Helical virus. A helical virus is rod- or thread-shaped. The virus that causes rabies is a helical virus. •Icosahedral virus. An icosahedral virus is spherically shaped. Viruses that cause poliomyelitis and herpes simplex are icosahedral viruses.


Are viruses classified by their shape?

A virus can have one of two structures. These are: •Helical virus. A helical virus is rod- or thread-shaped. The virus that causes rabies is a helical virus. •Icosahedral virus. An icosahedral virus is spherically shaped. Viruses that cause poliomyelitis and herpes simplex are icosahedral viruses.


What shape do viruses assume?

Viruses can assume various shapes, including helical, icosahedral, spherical, and complex shapes. The shape of a virus is determined by its structure and composition of proteins that make up the viral capsid.


What is viral morphology?

Viral morphology refers to the size, shape, and structure of a virus particle. It encompasses characteristics such as the presence of an outer envelope, the type of genetic material (DNA or RNA), and the symmetry of the virus particle (e.g. helical, icosahedral). Understanding viral morphology is important for identifying and classifying viruses.


What is the structure of a typical virus?

A virus is basically DNA or RNA (single- or double-stranded)surrounded by a protein capsule. Typically the protein coat, or capsid, of an individual virus particle, or virion, is composed of multiple copies of one or several types of protein subunits, or capsomeres. Some viruses contain enzymes, and some have an outer membranous envelope. Many viruses have striking geometrically regular shapes, with helical structure as in tobacco mosaic virus, polyhedral (often icosahedral) symmetry as in herpes virus, or more complex mixtures of arrangements as in large viruses, such as the pox viruses and the larger bacterial viruses, or bacteriophages . Certain viruses, such as bacteriophages, have complex protein tails. The inner viral genetic material -the nucleic acid- may be double stranded, with two complementary strands, or single stranded; it may be deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). The nucleic acid specifies information for the synthesis of from a few to as many as 50 different proteins, depending on the type of virus.


What is the structure of a virus like?

Viruses are ranges in different sizes and structures. HIV, HBV, influenza are all spherical in shape. Phages like T phages carry an icosahedral structures. M13 phages, ebola appear as hair like (or tube) structures. TMV appears as rod like structure.


What shapes do virus assume?

Viruses can have various shapes, including helical, icosahedral, complex, or enveloped. These shapes are determined by the way the viral proteins and genetic material are arranged within the virus particle.


Draw the structure of bacteriophage virus?

A bacteriophage virus is composed of a protein capsid that encloses its genetic material, which can either be DNA or RNA. The capsid is made up of protein subunits called capsomeres arranged in a helical or icosahedral structure. Some bacteriophages also have a tail structure used for attaching to and infecting bacterial cells.


What is andenovirus?

A non-enveloped icosahedral DNA virus commonly causing gastroenteritis. It is the second most common cause of viral gastro, second to the rotavirus.


What shape is a hepatitis a virus?

Coccus is the shape and some pictures ive seen is Staphylo Staphylo-Coccus