I took the test and the answer is not shear, so don't put that one. My next choice would have been strain.
Answer:
Option (A).
Explanation:
Facilitated diffusion may be defined as the process of movement of the particles from the region of higher concentration towards the region of lower concentration with the help of specific integral transmembrane protein.
Facilitated diffusion is a type of passive diffusion and solute particle down the concentration gradient. So this process doesn't require an ATP or any other energy source.
Thus, the mismatched pair is option (A).
Substitution i believe. There’s nothing deleted
It is the motile because it is what cause the movement of cells over surfaces without the aid of flagella
