18/01/2020 10:34 AM
apex answer: cells are the basic units of life
killing of virus-infected cells
Natural killer (NK) cells is the major component of immune system and a type of white blood cells that play an important role in immunity. Protease enzyme is present in the NK cells.
Natural killer cells can identify the virus infected cells and activates the cascade mechanism to kill the virus cells. Natural killer cells release cytokines that can kill the virus infected cells.
Thus, the correct answer is option 4.
D. it produces male and female sex cells
Hope this helps!
i believe its adapt
given enviroment are called adaptations.
fasters cars longer gas in your tank hope this helps
The answer is B and C.
I just took the test and this was the correct answer. Hope this helped:)