A primary active transport process is one in which MOLECULES MOVE THROUGH TRANSPORT PROTEINS THAT HAVE BEEN ACTIVATED BY ATP.
This is because, energy, in form of ATP is needed for active transportation to take place.
An ionic bond is formed when charged atoms or molecules are attracted to each other
If a radical is defined as a molecule with unpaired electrons,then the answer is OH.However,if you take the more general definition(an atom or molecule with unpaired electrons),then OH,O and H are all radicals.<span />