Acell with an extracellular sodium ion concentration of 50mm and an intracellular sodium ion concentration of 100mm needs to move sodium from outside the cell into the cell. which of the following mechisms is likely involved.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

The arrangement of particles is most ordered in a sample of