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

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

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?

Which of the following proteins would you expect a mutation in for a virus to infect a new host cell? RNA Dependent RNA polymerase/Reverse Transcriptase/DNA polymerase/etc. Hemagglutinin/Glycoprotein/GP120/etc. Fusion protein Capsid/Nucleocapsid proteins Why? What is that protein responsible for?

List the components shared by all free viral particles (virions).

Describe 4 differences and 4 similarities between viral lytic and lysogenic phases. * For each difference clearly state the reason why lytic is different from lysogenic using technical biological terms.* For each similarity you can just state what is the reason(s) the 2 phases are similar.   Essay Limit: 300 words   Book: Biology (Campbell)          11 edition          Urry. Cain. Wasserman. Minorsky. Reece