[Campbell Biology P.463] Oseltamivir Tamiflu inhibits the enzyme neuraminidase. Based on thi... | Practice Question

Oseltamivir Tamiflu inhibits the enzyme neuraminidase. Based on this mechanism, how does Oseltamivir help prevent or shorten the course of influenza infection?

  • A: It prevents the influenza virus from attaching to host cells.
  • B: It blocks the entry of the influenza virus into host cells.
  • C: It inhibits the replication of the viral genome inside host cells.
  • D: It prevents new virions from being released from infected host cells.

Explanation

Neuraminidase is an enzyme found on the surface of influenza viruses that helps newly formed virus particles exit infected cells by cleaving sialic acid residues on the host cell surface. By inhibiting neuraminidase, Oseltamivir prevents the release of new virions, thereby limiting the spread of the infection to other cells and shortening the duration of illness.