Question

question 4
1 pts
we have specialized receptors for detecting sweet, salty, sour, ______, and umami tastes. being able to detect pleasurable tastes enabled our ancestors to seek out energy- and protein-rich foods. detecting aversive tastes deterred them from eating ______ substances, increasing their chances of survival.

○ flavor, toxic
○ bitter, healthy
○ savory, nutritional
○ bitter, toxic

Explanation:

1. For the first blank: The five basic taste receptors are sweet, salty, sour, bitter, and umami. So "bitter" fits here. "Flavor" is a general term, "savory" is similar to umami, so they are incorrect.
2. For the second blank: Aversive tastes (like bitter) deter from eating harmful substances. "Toxic" substances are harmful, while "healthy" or "nutritional" are beneficial, so "toxic" is correct.

Answer:

D. bitter, toxic