Question

Cells have receptors on their surfaces to sense their environment and to communicate with other cells. Viruses use these cell receptors to

Answer 1

Viruses use these cell receptors to enter the cell

Answer 2

Enter the host cell.

Step-by-step explanation:

Viruses attach themselves to the cell surface receptors present on their host cells. Binding of viruses to these receptors is followed by penetration of the host cell.

For example, the flu virus binds to the cell surface receptors located specifically on the surface of cells of the respiratory system. Hence, the cell surface receptors of the host cell are used by viruses to enter the host cell.