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- Which of the following is an example of virus-encoded molecules modifying signal transduction pathways to promote replication? Production of a small subgenomic RNA in flavivirus-infected cells Degradation of Xrn1 in poliovirus-infected cells Herpes simplex virus protein that blocks pre-mRNA splicing Poliovirus cleavage of nuclear export proteinsDuring infection of a cell by Coronavirus, the N protein is: found on the outer surface of the virus particles synthesized on bound ribosomes on the rough ER synthesized in the cytosol on free ribosomes part of the RNA-dependent RNA polymerase required for binding of the virus particle to cells_____ mRNA is synthesized before replication of the viral nucleic acid.
- All of the following statements correctly describes the properties of Influenza A virus EXCEPT A-Viral transcription occurs in the nucleus B-Mature virion are released by budding C-Single stranded positive sense RNA virus D-Attaches to cell-surface sialic acidA viral mutation that causes changes in the glycoprotein spikes would affect which aspect of the virus? The virus would become lysogenic and incorporate its genome into the host cell genome. The virus would enter the host by a combination of endocytosis and fusion. The virus would lose its viral envelope and become a naked virus. The virus would attach to different host cells and its host range would be altered. The viral genome would not require uncoating once inside the host cell.Assume you isolate a single stranded (+) RNA virus. When you examine the proteins in the virus, you find that it does NOT contain replicase enzymes within its capsid. Which of the following is true? This virus must have a gene that encodes replicase. This virus will not be able to enter a host cell. Its genome cannot be translated (the process of translation) by the host cell ribosomes. A DNA copy of the viral genome has to be made before viral genes are expressed. This virus must lack surface antigens.
- Which step(s) in the replication cycle of HIV can still occur in the presence of a reverse transcriptase inhibitor? Select all that apply. transcription of viral genes initial viral attachment viral assembly integration of viral DNA into host genome initial viral entryWhich of the following is an example of virus-encoded molecules modifying signal transduction pathways to promote replication? Group of answer choices Production of a small subgenomic RNA in flavivirus-infected cells Degradation of Xrn1 in poliovirus-infected cells Herpes simplex virus protein that blocks pre-mRNA splicing Poliovirus cleavage of nuclear export proteinsViral structure can best be described as a ___. A. tiny cell surrounded by a cell wall B. tail sheath surrounded by tail fibers C. clump of DNA or RNA surrounded by a protein coat D. capsid surrounded by a protein coat
- The lytic pathway of a virus is characterized by viral DNA is incorporated into the host chromosomes. extensive transcription of viral DNA destruction of the host. Both a and b. Both b and c.After a virus has entered its host, what factor usually determines the manner (or steps) in which the viral genome is copied and the viral enzymes are produced? the size of the virion the number of infecting virus particles the type of viral genome the type of viral capsidViruses variously depend on their host cell for parts of the viral replication and maturation process. Many viruses do however encode for some enzymes that facilitate certain steps or virus-specific processes for viral replication and maturation. Which cellular processes and enzymes do all viruses lack and must therefore ALWAYS be supplied by the host cell?