Question

which factor raises basal metabolic rate?
o a. starvation
o b. malnutrition
o c. being thin and tall
o d. having a high percentage of body fat

Explanation:

Basal metabolic rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment, in the post - absorptive state.

• Starvation: When a person is starving, the body goes into a conservation mode. It slows down the basal metabolic rate to preserve energy as it perceives a lack of food supply.
• Malnutrition: Similar to starvation, malnutrition (lack of proper nutrients) also leads the body to reduce its metabolic rate as it is not getting the necessary fuel for normal metabolic functions.
• Being thin and tall: Taller and thinner individuals generally have a higher BMR. This is because they have a larger surface area. A larger surface area means more heat is lost from the body. To maintain body temperature (a key aspect of homeostasis), the body needs to produce more heat, which requires a higher metabolic rate.
• High percentage of body fat: Fat is less metabolically active compared to muscle. A higher percentage of body fat means there is less metabolically active tissue (muscle) in the body. So, it is associated with a lower BMR.

Answer:

C. Being thin and tall