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Coronavirus: Structure and Infections

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Questions and Answers

What is the genome composition of the coronavirus?

Single-stranded RNA, circular, segmented negative-sense

Double-stranded RNA, linear, nonsegmented positive-sense

Single-stranded RNA, linear, nonsegmented positive-sense (correct)

Double-stranded DNA, linear, segmented

Which of the following proteins are NOT mentioned as being part of the coronavirus?

Chemoagglutinin

Phosphoproteins

Glycoproteins

Lipopolysaccharides (correct)

Which illness is NOT directly attributed to coronaviruses according to the text?

Severe acute respiratory syndrome (SARS)

Ebola virus disease (correct)

Middle East respiratory syndrome (MERS)

Gastrointestinal illness

What are the characteristics of the coronavirus envelope?

<p>Contains large, widely spaced, club- or petal-shaped spikes (A)</p> Signup and view all the answers

What is the primary structure of the coronavirus nucleocapsid?

<p>Helical (A)</p> Signup and view all the answers

Study Notes

Corona Virus Characteristics

Large, enveloped RNA virus
Causes lower respiratory tract infections and implicated in gastrointestinal illness

Structure and Genome

Virion: spherical, 120-150 nm in diameter, helical nucleocapsid
Genome: single-stranded RNA, linear, non-segmented, positive-sense, 27-32 kb, capped and polyadenylated

Proteins

Two glycoproteins
Some viruses contain hundreds of nucleocapsid phosphoproteins
Some viruses contain hemagglutinin esterase (a type of surface glycoprotein)

Envelope

Contains large, widely spaced, club- or petal-shaped spikes

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Description

This quiz covers the characteristics and effects of Coronaviruses, including their structure, genome, and role in causing respiratory and gastrointestinal illnesses.