<span>I believe the answer is: D. proteins
The main functions of these proteins is to allow specific substance to pass through the membrane of the cells which needed for the energy formation for cells'functions.It created through the combination of more than 20 amino acids with different functions.</span><span />
Answer:
It ensures that the two daughter molecules are exact copies of the parent molecule.
Explanation:
Answer:
Rhodopsin is the photopigment in rods.
