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Do all viruses have an envelope?

Updated: 8/10/2023
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Wiki User

7y ago

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No. I don't think so.

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Lisandro Veum

Lvl 10
2y ago
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15y ago

If you mean lipid bilayers like cells, then yes, some do, some don't. Herpes virus is an example of one with a membrane, polio virus is an example with none. Despite their differences, all viruses will have some sort of layer covering their internal parts, whether it be a lipid bilayer or hard capsid. Viroids are an exception but I prefer to leave them out of this conversation.

Lipid bilayers enclosing viruses are called "viral envelopes." When some viruses leave the host cell, they take some of the cell membrane with it. Unfortunately, these viruses are harder to detect because they contain many of the same proteins embedded in the envelope that were originally embedded in the host cell's membrane.

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11y ago

Yes, this is true, some viruses have a membranous envelope surrounding their protein coat, and the envelope helps the viruses gain entry into the host cells.

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14y ago

This is true.

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11y ago

Yes

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Q: Do all viruses have an envelope?
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Related questions

Do all computer viruses have an envelope?

No. I don't think so.


What is a membrane envelope?

All viruses lack cell membranes but some animal viruses have a membrane similar in composition to a cytoplasmic membrane surrounding their capsids called an envelope. This is a membrane envelope. Viruses that have envelopes are called enveloped virion, without the envelope they are called a nonenveloped or naked virion. The envelope is composed of a phospholipid bilayer and proteins such as glycoproteins.


Does the rabies virus have an envelope?

Yes, Rabies virus has an envelope of host plasma membrane origin which is embedded with the sole virus spike protein - Glycoprotein.


Are viruses made of protein and lipid membranes?

A virus particle is composed of a nucleic acid that is surrounded by the capsid (which is the protective layer that is made out of protein). Some viruses can have lipid envelope however, not all viruses have a lipid envelope.


How are capsids and envelopes formed?

All viruses naturally have capsids that surround the nucleic acid in the central core. When they are just in this form and don't contain an envelope, they are known as naked viruses. Members of 13 of the 20 families of animal viruses possess an additional covering external to the capsid called an envelope. This envelope is a modified piece of the host's cell membrane.


What are several things used to classify viruses?

Viruses can be labeled as RNA or DNA viruses and they can be said to have an envelope or to be "naked".


The grouping of viruses is based partly on the?

The grouping of viruses is based on the particular species. Viruses are also living organisms which are divided into specific genus and species.


What additional protective layer of protein surrounds some viruses-?

The envelope.


What supplies the envelope of enveloped animal viruses?

Hello there! The envelope of enveloped viruses come from the lipid bilayer of host cells during the budding process. Simple! 😊


Of what material is the envelope present in some animal viruses composed?

The envelope present in some animal viruses is composed of lipids. This lipid material is derived from the cell membrane of the host.


What grouping of viruses is based partly?

presence or absence of an envelope.


Which component is present in some viruses but absent in others?

Envelope