SARS-CoV and SARS-CoV-2 (COVID-19) are related coronaviruses
that both infect human cells by binding to the ACE2 receptor. However,
SARS-CoV-2 has additional features in its spike protein that influence how
efficiently it enters host cells and spreads between people.

Which of the following best explains a major molecular
difference between SARS-CoV and SARS-CoV-2?

Question

SARS-CoV and SARS-CoV-2 (COVID-19) are related coronaviruses
that both infect human cells by binding to the ACE2 receptor. However,
SARS-CoV-2 has additional features in its spike protein that influence how
efficiently it enters host cells and spreads between people.

Which of the following best explains a major molecular
difference between SARS-CoV and SARS-CoV-2?

Answer

SARS-CoV-2’s
spike protein contains a polybasic cleavage site that facilitates more
efficient entry into human cells

Answer

Only
SARS-CoV-2 uses ACE1 as its cellular receptor

Answer

Only
SARS-CoV-2 uses ACE2 as its cellular receptor

Answer

SARS-CoV’s
spike protein contains a polyacidic cleavage site that facilitates less efficient
entry into human cells

Crowdly

SARS-CoV and SARS-CoV-2 (COVID-19) are related coronaviruses that both infect h...

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