What is the purpose of killer T cells?

Killer T-cells find and destroy infected cells that have been turned into virus-making factories. To do this they need to tell the difference between the infected cells and healthy cells with the help of special molecules called antigens. Killer T-cells are able to find the cells with viruses and destroy them.

Explanation:

hope this helps best of luck!!! please let me know if this helps or if it doesn't help.:

The answer would be: The sperm will not survive the acidic conditions in the vagina.

The sperm mature, and grow flagellum in the testes, before they interact with the bulbourethral gland, and the digestive enzymes are already located in the acrosome before interacting with the bulbourethral gland.