Glucose serves as a major source of energy for metabolic processes in mammalian cells. Since polar molecules cannot be transported across the plasma membrane, carrier proteins called glucosse transporters are needed for cellular uptake.
The answer is option D. Habituation. Habituation is the process of filtering out sights, scents, and sounds that have little effect on survival. Habituation is the diminished response of animals to certain stimuli that are deemed unnecessary or irrelevant in the process of of survival.
