Answer
B
Work Step by Step
The glycoprotein spikes on influenza viruses are composed of neuraminidase or hemagglutinin. The function of neuraminidase is to hydrolyze the mucus surrounding the epithelial cells of the lungs, allowing the virus to access the cell surface, whereas hemagglutinin allows the virus to bind to the epithelium of the respiratory tract, leading to endocytosis.
