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virus's(monera)

virus terms and q&a

QuestionAnswer
Capsid The protein coat that surround the genetic material of a virus.
Envelope A membranous covering found on some virus capsids that allows the virus to enter a host cell by fusing with the host's cell membrane.
Enzymes Proteins that act as catalysts for chemical reactions.
Genes A unit of genetic material containing the information needed to produce and regulate a single protein.
Lysogenic The phase found in some viruses in which the virus's genetic material becomes incorporated into the host cell and no new viruses are produced. Compare with lytic.
Lytic In viruses with a lysogenic phase, the opposing phase in which virus replication takes place.
Describe the lytic and lysogenic phases found in some viruses. In the lytic phase virus particles infect host cells and are replicated.
What are the six steps in virus replication The six steps are attachment, penetration, uncoating, replication, assembly and release.
What are two characteristics by which viruses are classified? Viruses are classified according to the type of genetic material they have and by the shape of their capsid.
What types of genetic material might a virus carry? Viruses are known to carry single-stranded and double-stranded DNA and single- stranded and double-stranded RNA. The molecules may be linear or circular.
What are the two main types of capsid shape? Capsids may be helical (tube-like) or icosahedral (ball-like).
How is the genetic material of viruses replicated? Viruses have no replication capabilities themselves, so they must use the replication machinery of their host cells.
What is contained within the capsid of a virus? The capsid contains the genetic material, either DNA or RNA, and sometimes enzymes.
Created by: vcopeland
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