The Common Cold (Rhinovirus)

The video tutorial discusses the common cold, primarily caused by rhinoviruses, which are positive-sense, single-stranded RNA viruses from the picornavirus family. It explains the virus's structure, how it attaches to host cells, and the infection process. Rhinoviruses spread through droplets and fomites, causing symptoms like a runny nose. Due to numerous serotypes, lasting immunity is difficult, making prevention through hygiene crucial.

What is the primary cause of the common cold according to the video?

• Rhinovirus

• Influenza virus

• Coronavirus

• Adenovirus

What type of genetic material do rhinoviruses contain?

• Double-stranded DNA

• Single-stranded DNA

• Positive-sense RNA

• Negative-sense RNA

Which family do rhinoviruses belong to?

• Herpesvirus

• Retrovirus

• Flavivirus

• Picornavirus

How do rhinoviruses attach to host cells?

• By engulfing the host cell

• By injecting DNA into the nucleus

• By fusing with the cell membrane

• By binding to ICAM-1 molecules

What is the primary symptom caused by the release of histamine during a rhinovirus infection?

• Runny nose

• Fever

• Cough

• Sore throat

What is the most effective way to prevent the spread of rhinoviruses?

• Vaccination

• Antiviral medication

• Hand-washing and disinfecting surfaces

• Wearing masks

Why is it challenging to develop a vaccine for rhinoviruses?

• They have many serotypes

• They are not harmful

• They mutate rapidly

• They are resistant to heat