Explanation:
Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane. Two classes of proteins that mediate facilitated diffusion are generally distinguished: carrier proteins and channel proteins.
Answer:
b.Time conversion from Universal Time Coordinated (+0) to Central Standard Time(-6). UTC to CST time zones converter, calculator, table and map.
Answer:
D
Explanation:
without cell membrane there would be no cells. It's basically an organelle that makes a cell have it' name