Answer:
Enzyme-controlled reactions (digestion, synthesis, growth, regulation, reproduction, circulation, excretion)
Explanation:
In order for plants to assimilate nitrogen directly into their system, the nitrogen must be in the form of nitrates. Nitrogen in the air and ammonia from decayed matter in the soil is converted to ammonium by decomposers and nitrogen-fixing bacteria. The ammonium is further nitrified to nitrates by nitrifying bacteria. Finally, the nitrates can then absorbed by the plants.
Some molecules are too big they cannot diffuse through the membrane, for example starch (glucose) molecules.
Glucose which is stored in the muscles, livers and some of the fatty areas in the body, can be transformed into Glycogen for future use. SO, the answer is C.
