Nightingale Microbiology Practice Exam

SARS is a respiratory illness caused by

Rhinovirus Adenovirus Influenza virus Coronavirus

Correct Answer:

Coronavirus

Explanation:

SARS is caused by a coronavirus. Coronaviruses are enveloped, positive-sense RNA viruses with spike proteins on their surface that give a crown-like appearance. They primarily affect the respiratory tract and can cause a range of illnesses from mild colds to severe pneumonia. The other listed viruses do cause respiratory illness but are not responsible for SARS: rhinovirus is a picornavirus that typically causes common colds; adenovirus is a non-enveloped dsDNA virus with different disease patterns; influenza virus is an orthomyxovirus with segmented negative-sense RNA that causes flu. So the coronavirus is the culprit behind SARS.

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