Question

5 multiple choice 1 point how would a small, nonpolar molecule likely diffuse across a cell membrane? open channel - mediated facilitated diffusion substrate and carrier - mediated facilitated diffusion simple diffusion active transport 6 multiple choice 1 point drinking alcohol can cause dehydration, which makes the blood hypertonic. which option best describes the consequences of this hypertonic blood? hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypertonic. this, in turn, draws water out of the cells. hypertonic blood will lose water to the interstitial fluid, which makes the interstitial fluid hypertonic. this, in turn, causes water to move into the cells. hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypotonic. this, in turn, makes the interstitial fluid lose water to the cells. hypertonic blood forces water into the interstitial fluid, which makes the interstitial fluid hypotonic. this, in turn, makes the interstitial fluid lose water to the cells.

Explanation:

1. Small, non - polar molecules can pass through the lipid - bilayer of the cell membrane easily without the help of transport proteins, which is simple diffusion. Facilitated diffusion requires transport proteins (channels or carriers) and active transport requires energy.
2. In a hypertonic solution, water moves from an area of lower solute concentration to an area of higher solute concentration. Hypertonic blood has a higher solute concentration than the interstitial fluid, so it will draw water out of the interstitial fluid, making the interstitial fluid hypertonic relative to the cells, which in turn will draw water out of the cells.

Answer:

1. C. simple diffusion
2. A. Hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypertonic. This, in turn, draws water out of the cells.