The correct answer is (a) True
Explanation: In the reaction catalyzed by immobilized enzymes, the substrates diffuses through the solutions to the catalytic active sites and products diffuse away in the bulk solutions. This diffusion is due to the concentration gradient created as solutes move in direction of higher to lower concentration. At different levels in immobilized enzymes observe diffusional resistance. This resistance may vary depending on
The nature of support material
Hydro-dynamical conditions surrounding the support material
Distribution of enzyme inside/ on the surface of the support material.
Hence the above statement is true.