Facilitated diffusion is usually significant to pass the ions across the hydrophobic layer of the plasma membrane. Transmembrane integral protein and careers proteins provide the channels that allow the ion to pass across the membrane. When an ion bind to their active site on the protein (note that the proteins are very selective), the protein changes conformation. It is this change in conformation opens up the channel that allows the ions to be passed across the membrane. When the ions are released inside of the cell, the protein resumes normal shape (and the channel also closes) and the active site becomes available again or another ion.
Answer:
the answer is true.
Water concentrates water-soluble human waste products.
0.5 oz is equivalent to 025 grams....hope it helped....:)
I think the correct answer is a
Answer:
its "A" water flowing over a tall cliff
Explanation:
