Problem:
Question: Why does secondary active transport require the absence of porins in the membrane?
A. Porins are passive transporter proteins that will interfere with ATP hydrolysis and will dissipate any ionic concentration gradients.
B. The porins will interfere with ATP hydrolysis.
C. The porins will interfere with ATP hydrolysis and will dissipate any ionic concentration gradients.
D. The porins will dissipate any ionic concentration gradients.
E. Porins are passive transporter proteins.
Please suggest correct answer.