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Questions and Answers
Which of the following is true about the structure of a virus?
Which of the following is true about the structure of a virus?
- A virus is made up of RNA surrounded by a protein coat called a capsid.
- A virus is made up of DNA surrounded by a protein coat called a capsid.
- A virus is made up of DNA or RNA surrounded by a protein coat called a capsid. (correct)
- A virus is made up of DNA and RNA surrounded by a protein coat called a capsid.
What is the function of the protein capsid in a virus?
What is the function of the protein capsid in a virus?
- The protein capsid holds the genetic information for the virus and protects it. (correct)
- The protein capsid determines the shape of the virus.
- The protein capsid extends out from the membrane envelope and can interact with host cells.
- The protein capsid allows the virus to be taken into a host cell more easily.
Which of the following is NOT a possible shape for a virus capsid?
Which of the following is NOT a possible shape for a virus capsid?
- Rod-shaped
- Spherical
- Polyhedral
- Cube-shaped (correct)
What is the nucleic acid core of a virus?
What is the nucleic acid core of a virus?
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What additional structure do many viruses have that allows for easier entry into a host cell?
What additional structure do many viruses have that allows for easier entry into a host cell?
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Study Notes
Virus Structure
- A virus consists of a protein capsid that surrounds a nucleic acid core.
- The protein capsid provides protection to the viral genome and helps in the attachment of the virus to the host cell.
- The nucleic acid core can be either DNA or RNA and contains the genetic material of the virus.
- The shape of a virus capsid can be helical, icosahedral, or complex, but not square.
- Many viruses have an additional structure called an envelope, which is a lipid bilayer that assists in the entry of the virus into the host cell.
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Description
Test your knowledge on the structure of viruses with this quiz. Learn about the DNA or RNA surrounded by a protein coat called a capsid, and understand the different shapes and appearances of viruses.
