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What additional protective layer of protein surrounds some viruses-?
RosarioCruzfb7803
The envelope.
Curt Eichmann
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What additional protective layer surrounds some viruses?
envelope
What additiional protective layer of protein surrounds some viruses?
This layer is called a capsid. The viruses without one are called naked viruses. The naked virus is can be damaged more readily by things in the environment.
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.
Do viruses have cyoplasm?
Viruses do not have a cytoplasm. A virus particle is known as a virion. It consists of nucleic acid (DNA or RNA) surrounded by a protective coat made of protein known as a capsid. Some viruses are surrounded by an envelope which comes from the host cell membrane.
What basic structure do viruses share?
Unlike prions and viroids, viruses consist of two or three parts: all viruses have genes made from either DNA or RNA, long molecules that carry genetic information; all have a protein coat that protects these genes; and some have an envelope of fat that surrounds them when they are outside a cell. Viroids do not have a protein coat and prions contain no RNA or DNA. In short, just say that all viruses have a protein coat and either DNA or RNA.
How do capsomeres help in viruses?
Answer by Techsupportcapsid provides the second major criterion for the classification of viruses. The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid.
Do viruses have protective shell?
coat or capsid
Do viruses have ribosomes?
Viruses consist of two or three parts: all viruses have genes made from either DNA or RNA, long molecules that carry genetic information; all have a protein coat that protects these genes; and some have an envelope of lipids that surrounds them when they are outside a cell. The hepatitis delta virus of humans has an RNA genome similar to viroids but has protein coat derived from hepatitis B virus.
Do viruses have a protein coat?
no
What additional layer of protein surrounds some viruses?
Viruses are composed of two main parts an outer protein covering called a capsid and an inside core of either DNA or RNA. Not both DNA and RNA. Some of these have an envelope over the capsid. The ones that do not are said to be naked. The proteins in the capsid allow the virus to attach to the "docking stations" proteins of the host cell. The naked viruses are more resistant to changes in the environment. Some naked viruses include poliomyelitis, warts, the common cold, chickenpox, shingles, mononucleosis, herpes simplex (cold sores), influenza, herpes viruses and HIV (AIDS). Some enveloped viruses include norovirus (stomach bug), rotavirus and human papillomavirus (HPV). The envelope can be damaged by freezing temperatures, chlorine, and phenol. If damaged the virus cannot infect.
Why are lipophilic viruses easier to kill?
Lipophilic viruses require the lipid (fatty) envelope to remain active ("live"*), and the fatty layer can be destroyed by alcohol. Non-lipophilic viruses do not require this fatty envelope, and the protein layer (capsid) is more resistant to alcohol. *Note: viruses are not actually alive, they are only genetic codes with 1 or 2 (lipophilic) protective layers. Biologists call "live" viruses *active* and "dead" viruses *inactive* or *inactivated*.
Are viruses unicellular?
Viruses are DNA wrapped up in protein.
