After a certain age, most mammals lose their ability to metabolize lactose because:
A) levels of the enzyme lactase decline.
B) it competes with other nutrients in other food types.
C) eating meat is not compatible with drinking milk.
D) they no longer need the nutrients found in milk.

Question

Quizplus · Accepted Answer

As mammals age, they produce less of the enzyme lactase that is needed to break down lactose, the sugar found in milk. This leads to lactose intolerance, which can result in digestive discomfort after consuming dairy products.

After a Certain Age, Most Mammals Lose Their Ability to Metabolize