Which of the following are examples of facilitated diffusion?

(select all that apply)

a. a chloride ion moves across the plasma membrane from a higher to lower concentration inside the cell.

b. a protein binds to glucose to transport it across the plasma membrane.

c. a water molecule moves across the plasma membrane.

d. channel proteins change shape to allow transport of smaller molecules across the plasma membrane.

Aremote community desperately needs more electrical energy. it is located in an area with the following characteristics: average wind speed of 15 – 20 km/hr some medium-sized rivers with slow-moving currents few coal deposits some oil exploration being conducted within 400 miles based on the above information, which energy source would be the most economical and safest for the community to pursue? a. fossil fuel b. hydroelectric c. nuclear d. wind