Two bran muffins are sitting on a table at room temperature.
one is a large bran muffin, the other a small bran muffin.
which of the following is a true statement about these muffins?
select one:
a. the large bran muffin contains more heat energy.
b. the small bran muffin contains more heat energy.
c. the atoms that make up the large bran muffin are moving more rapidly.
d. the atoms that make up the small bran muffin are moving more rapidly.

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.