Where are the protein channels that are used during facilitated diffusion located? a. outside the cell b. inside the nucleus c. inside the cell membrane
The answer is (C) inside the cell membrane. The channels for facilitated diffusion aren’t outside, or else things still couldn’t get in, so the answer is not A. And it isn’t B because then things couldn’t get in from outside either. I am positive that the answer is inside the cell membrane. Have a lovely day
Answer from: Quest
The correct answer is lo xay
Answer from: Quest
answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.
Compare the parts of a cell and the cell as a whole to another common nonliving system (i. e., a car, a city, describe the parts of a cell and their primary function.