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envelop
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∙ 12y ago
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The capsid of a virus is the?
the protection of a cell
What is the protein coat the surrounds a virus call?
The protein coat surrounding the nucleic acid of a virus is called the capsid. These are broadly classified according to their structures. Helical (cylindrical) and icosahedral (spherical) are the most common types.
What property of a virus determines its attachment to a host cell membrane?
The protein arrangement on the capsid.
What is the outer layer of a virus composed of?
Outer layer of a virus is called a capsid. It is the shell of protein which protects the nucleic acid, the brain of a virus. Capsid is composed of individual morphological units called capsomers.
How do enveloped viruses differ from nonenveloped viruses?
DNA or RNA + Structural Proteins + Enzymes and nucleic acid binding proteins = Nucleocapsid (may be the same as a virion or surrounded by an envelope) If there is only a Nucleocapsid, then it is considered a Naked Capsid Virus If there is a Nucleocapsid with the addition of Glycoproteins and a Membrane, then the virus is considered enveloped.
What surrounds a virus?
I take it that you meant to ask what surrounds the genome of the virus. The genome of the virus (be it DNA or RNA) is enclosed within the capsid shell. The capsid shell is made by the oligomerisation of capsid proteins in a specific organised manner. The genome together with the capsid is termed as nucleocapsid. Sometimes the nucleocapsid is surrounded by a phospholipid membrane (of host origin) called the envelope. The viruses which have an envelope are called envelope viruses eg., Chikunguyna virus, Rabies virus, HIV and the viruses without an envelope are called naked viruses eg., Poliovirus, Rotavirus
What is the protein coat that surounds a virus called?
The envelope.
What is the life cycle of rubella?
Lytic cycle of rubella virus # Virus attaches to host cell. # Plasma membrane surrounds the virus and an endosomal vesicle forms. # The envelope of the virus fuses with the membrane and the vesicle. # The virus is released into the host's cytoplasm # Viral nucleic acid separates from its capsid # Nucleic acid enters host nucleus and replicates # Transcription into mRNA # Host ER directed by mRNA to synthesize glycoproteins and capsid proteins plus proteins of the viral envelope. # Vesicles transport glycoproteins to plasma membrane of cell. # New viruses assemble and are released from host cell after being enveloped by host's modified plasma membrane. Lytic cycle of rubella virus # Virus attaches to host cell. # Plasma membrane surrounds the virus and an endosomal vesicle forms. # The envelope of the virus fuses with the membrane and the vesicle. # The virus is released into the host's cytoplasm # Viral nucleic acid separates from its capsid # Nucleic acid enters host nucleus and replicates # Transcription into mRNA # Host ER directed by mRNA to synthesize glycoproteins and capsid proteins plus proteins of the viral envelope. # Vesicles transport glycoproteins to plasma membrane of cell. # New viruses assemble and are released from host cell after being enveloped by host's modified plasma membrane.
What protect the DNA of a virus?
Capsid
Which protects the DNA of a virus?
Capsid
What are the two main structures of a virus?
Viruses have a particular character that they need a living host to survive or they cannot otherwise live. Generally viruses have a capsid which has its viral RNA enclosed in it. Capsid is covered by thick membrane.
Why is the capsid protein of a of a virus important?
They help the virus attach to the host cell.
