Virus-Cell Interactions Part 2 Multicellular Hosts

The video tutorial by Professor Dave covers the basics of viral infections, focusing on terminology, host interactions, and the immune response. It explains the host range, tropism, and virulence factors of viruses, as well as the entry and dissemination of viruses in the body. The progression of viral diseases is outlined, including acquisition, incubation, replication, and immune response. The video also discusses the resolution of infections and the potential for immunopathology.

What is the role of a host in the context of viral infections?

• To provide nutrients to the virus

• To support the growth of a virus

• To eliminate the virus

• To mutate the virus

What does the term 'host range' refer to?

• The variety of symptoms a virus can cause

• The number of viruses a host can support

• The spectrum of species susceptible to a virus

• The duration of a viral infection

Which of the following is a common route of viral entry into the body?

• Through the ears

• Through inhalation

• Through the eyes

• Through the skin

What is the first step in the progression of a viral disease in the human body?

• Immune system response

• Replication in target tissue

• Acquisition or entry into the body

• Initiation of infection

During which phase might a viral infection be asymptomatic?

• Incubation period

• Replication phase

• Resolution phase

• Acquisition phase

What is viremia?

• The spread of viruses through the lymphatic system

• The transport of viruses in the blood

• The replication of viruses in the brain

• The elimination of viruses by the immune system

What can chronic systemic inflammation lead to?

• Faster resolution of infection

• Destructive and worrisome effects

• Increased viral replication

• Improved immune response