Inconsistent with theories that hunger and eating are entirely regulated by set points is the fact that
A) flavor has a major impact on hunger and eating.
B) the brain can use ketones.
C) the main fuel of the brain is glucose.
D) humans are not warm-blooded.
E) men weigh more than women.

Question

Quizplus · Accepted Answer

The fact that flavor can have a major impact on hunger and eating suggests that there are other factors beyond set points that regulate these behaviors. This is supported by research showing that palatability, sensory-specific satiety, and social influences can all affect food intake.

Answer: B 
 The use of ketones as an energy source by the brain is inconsistent with the idea that hunger and eating are entirely regulated by set points, which assume that the brain can only use glucose. Keto adaptation is linked to appetite reduction, suggesting that the body has flexible mechanisms to adapt to changes in energy demands and nutrient availability.

Answer: C 
 The fact that glucose is the main fuel of the brain is not inconsistent with theories of set points, as these theories do not claim that glucose is the only factor involved in hunger and eating regulation. Nonetheless, the flexibility of the brain to use other fuels (e.g., ketones) argues against the rigid view that set points determine food intake.

Answer: D and E 
 These choices are irrelevant to the question of whether set points fully explain hunger and eating regulation.

Inconsistent with Theories That Hunger and Eating Are Entirely Regulated