Antibiotics germs killed immune system in the human body
Answer:false
Explanation:
A paper clip can become magnetic if it exposed to magnetic force that polarizes it
Marker/Recognition proteins extend across the cell membrane and serve to identify the cell. The immune system uses these proteins to tell good cells from foreign invaders.
Answer:
the answer is genetic drifts.
I believe (not sure) that the answer is B, viruses must invade their host before being able to reproduce.
I remember seeing a diagram of the general life of a virus, and I remember seeing the virus sticking to a cell, merging in, and reproducing thereafter (sort of like a factory). Once again, I am not sure and the answer may as well be another one.
