A membrane that allows only some materials to move in and out of the cell is B. Semipermeable.
Through my research I found matching questions with similar answers:
A) macrophages
B) antigens
C) antibodies
D) lymph
The best answer to fill in the blank would be the third option C) Antibodies which in the name anti means against, so since the word anti is the same as against, its a battle between antibodies and invaders, so that's why its C).
<span>Gregor Mendel was one of the first scientists to use numbers to look for patters in experimental data. </span>
Cl has nonmetallic properties
