I agree the best choice is A............
Answer:
It regulates the movement of proteins and RNAs into and out of the nucleus
Explanation:
The nuclear pore complex are protein channels connecting the outer membrane of the nucleus to the inner membrane of the nucleus. They securely regulates the almost all of the transport of protein and RNAs into and out of the nucleus.
Answer:
Ohm's Law
Explanation:
The relationship: 
where V represents the voltage across a resistor of resistance "R" through which a current (I) flows,
is known as Ohm's Law in honor of Georg Ohm, who discover this proportionality.
Answer:
+1.33 ×
C and -1.33 ×
C respectively.
Explanation:
Electric potential (V) is the work done in moving a unit positive charge from infinity to a reference point within an electric field. It is measured in volts.
V =
............. 1
where: k is a constant = 9 ×
N
, q is the charge and r is the distance between the charges.
From equation 1,
q =
............... 2
The charge on each ball can be determined as;
given that; V = 1.2 ×
, k = 9 ×
N
and r = 1.00 m.
From equation 2,
q = 
= 1.33 ×
C
Thus, the charge on the first ball is +1.33 ×
C, while the charge on the second ball is -1.33 ×
C.