The sodium-potassium pump forces ___sodium ions ___ the cell for every ___ potassium ions ___ the cell.
A) 3; into; 2; into
B) 2; into; 3; out of
C) 3; out of; 1; out of
D) 3; out of; 2; into
Question 2
One reason that humans have fewer genes than previously thought is because ___ of the genome does not encode proteins.
a. 25
b. 50
c. 90
d. 97