Two students studying physiology taste a known "bitter" substance,and both report sensing bitterness.They then sample another substance.Student A reports sensing both a bitter taste and a salty taste,but student B reports only a salty taste.What is the most logical explanation?

Question

Quizplus · Accepted Answer

The fact that both students were able to taste the bitterness of the first substance suggests that they both have functional bitter taste receptors. However, when they tasted the second substance, student A reported sensing both a bitter and salty taste, while student B only sensed a salty taste. This suggests that student A has a protein receptor that is capable of detecting both bitter and salty molecules, whereas student B does not have the protein receptor to detect the bitter molecule present in that substance.

Two Students Studying Physiology Taste a Known "Bitter" Substance,and Both