Multiple choice

Viral neuraminidase is a type of neuraminidase found on the surface of influenza viruses. Which of the following can be excluded from the functions of neuraminidase?

  1. It allows virus to permeate mucin of the host cell.

  2. It destroys the haemagglutinin receptors in a host cell.

  3. Viral neuraminidase cleaves terminal neuraminic acid on the surface of the infected cell.

  4. It interacts with cell-membrane receptors containing N-acetylneuraminic acid.

  5. It prevents self-aggregation of virions.
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D Correct answer
Explanation

The haemagglutinin interacts with cell-membrane receptors containing N-acetylneuraminic acid (sialic acid).

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