What is the function of the surface proteins on the influenza virus

To protect against antibiotics
To attach to a host cell
To manufacture enzymes using a host's immune system
To remove a host's cell's DNA

The function of surface proteins on the influenza virus is to attach to a host cell. These surface proteins, called hemagglutinin (HA) and neuraminidase (NA), play a crucial role in the initial steps of viral infection. HA helps the virus attach to and enter the host cell, while NA helps release newly formed virus particles from the host cell after replication.