Which of the following is CORRECT regarding the viral envelope? (Choose All that apply) It is composed of host cell proteins It is composed of host cell phospholipids A viral envelope is not composed of any of the above choices It is composed of viral phospholipids It is composed of viral proteins

Berkely’s experiment with temperature sensitive viral mutant showed that ----. virus could not make the viral protein at high temperature viral genome remained in the cell after the initial infection continuous presence of viral protein was required to maintain the transformed malignant phenotype of cells. all of the above a and b please answer it quickly

viral genome needs to get to the nucleus for the virus that replicates in the nucleus. the viral nucleocapsid has to pass two barriers (i.e., plasma membrane and nuclear membrane). Compare and contrast the mechanisms by which the viruses penetrate the two membranes.

Which of the following statements are correct for a class V ssRNA (-) virus? it uses its genome directly for translation it must make the complementary (+) RNA strand to synthesize more of its genome it replicates its genome via classical semiconservative replication it converts its genome to DNA via reverse transcriptase as part of its life cycle

What determines the host range of a virus? the proteins in the host's cytoplasm the enzymes carried by the virus whether its nucleic acid is DNA or RNA the proteins on its surface and that of the host

Which of the following is true about capsid? There could be more than one answer.   Present in both enveloped and naked virus. Composed of individual protein molecules called capsomeresiral nucleic acid. Houses the viral nucleic acid. Capable of self-assembly. Not present in coronavirus

What is a viral envelope? Describe how it is made.

Below is a figure for the cycle of the Influenza virus. Explain the shape.

The omicron variant of SARS-CoV-2 has the amino acid substitution G339D in the spike protein on the virus surface. In cellular fluids at -pH 7 the wild type spike protein has a net negative charge. This substitution will make the spike protein: less negative absorb UV light more strongly at 280 nm more negative more hydrophobic

Describe a drug therapy that has been used for patients infected with SARS CoV2.  What does it target/disrupt – a part of the virus itself, a viral process, the host immune response?