The S protein of the SARS-CoV-2 virus attaches to the - protein of a host cell and uses the protein to initiate its entry into the cell.

The animal host for SARS-CoV-2 is the . After circulating among these animals in the wild for a long period of time, the virus accumulated mutations that allowed infection of humans.

The influenza and SARS-CoV-2 viruses have become extremely prevalent in the human population. Many people receive vaccines yearly to help prevent symptoms or infections. What is the role of the vaccine to help fight off a viral infection?Select one:a.The vaccine infects the host cell and causes the cells to lyse.b.The vaccine stimulates the production of antibodies for a specific virus.c.The vaccine creates more white blood cells.d.The vaccine engulfs the virus once it enters the body.

When cells are infected with viruses such as SARS-CoV-2 they can release interferons. Describe the role of interferons.

Which coronavirus protein is responsible for attaching the virus to the receptors on the host cell's membrane?Multiple ChoiceM proteinH proteinS proteinE protein

Viruses attach to membrane receptors on the host cell that are