<span>Sodium channels close when not occupied
</span><span>Sodium ions diffuse through and enter the cell.
</span>
Then they leave the cell.
The sodium diverts in the cell layer have receptor locales for acetylcholine.
<em><u>Sample Response:</u></em> The data for the first part of the experiment support the first hypothesis. As the force applied to the cart increased, the acceleration of the cart increased. Since the increase in the applied force caused the increase in the cart's acceleration, force and acceleration are directly proportional to each other, which is in accordance with Newton's second law.
<span>It is a way to camouflage the squirrel in a changing habitat.</span>
<span>The grasslands typically lie in the middle of large lanmasses, or the interior of continents, where rivers are most likely to flow far away from seawater sources. Here the ever
present value of water can be seen, as it supplies the source of life to all the plants and animals in the ecosystem in a lush and relatively cushy environment when compared to
the biomes like the desert or savannah.</span>
At this point the enzyme is denatured.
