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Which part of the animal virus is not reproduced in multiple copies?
A) Capsid
B) Proteins
C) Envelope
D) None of the above

seo-qna
Last updated date: 20th Jun 2024
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Answer
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Hint: Virus is a nucleoprotein entity made up of an outermost covering known as an envelope, a protein coat called a capsid and the nucleic acid.

Complete step by step answer: Viral populations do not grow through cell division because they are acellular. Instead, they use the machinery of host cells that produce multiple copies of the envelope, capsid and nucleic acid and assemble them into a cell. Animal viruses like other viruses depend on the host cell to complete their life cycle. Its genome consists of either RNA or DNA, which may be single or double-standard. After the virus uses the host cell resources to make new viral proteins and genetic material, viral particles assemble and prepare to exit the cell. Because viruses manipulate host cells into building new viruses which mean viruses don’t have the organelles, nuclei and even ribosomes to copy their genes. The life cycle of viruses differs greatly between species, but there are six basic stages in the life cycle of viruses: Attachment, penetration, uncoiling, replication, assembly and lysis. During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it. During uncoiling, replication and assembly, the virus incorporates itself to the host cell and injects its genetic material and induces it to replicate the viral genome. During lysis, the newly created viruses are released from the host cell either by causing the cell to break apart, waiting for the cell to die or by budding off through the cell membranes. Ribosomes are not made in multiple copies, because viruses use host cell ribosome to translate their mRNA
Hence, the correct answer is option D.

Note: A virIon is an entire virus particle that exists outside the cell. The core provides infectious capabilities. while the capsid gives specificity to the virus. The lysis cycle involves the reproduction of viruses using the host cell to manufacture more viruses; the viruses then burst out of the cell.