Question

the basal metabolic rate (bmr) is the amount of energy that must be consumed by a person at rest to maintain his or her body weight. bmr depends on several factors, including sex, age, height, and weight. this graph shows the bmr for a 6 - foot tall 45 - year - old male. bmr by weight
part b - thinking critically
which two statements about basal metabolic rate are true?
if all other factors are identical, a person who weighs more will have a higher bmr than a person who weighs less.
basal metabolic rate includes the energy consumed by the body during cellular respiration.
the basal metabolic rate determines exactly how many calories to consume each day.
if you lose weight, your bmr will not change.
if you exercise vigorously, you will need to consume fewer calories than your bmr suggests to maintain a constant weight.

Explanation:

1. Basal metabolic rate (BMR) is the energy consumed at rest for basic body - functions like cellular respiration. Heavier people generally have a higher BMR as more energy is needed to maintain their body. So, if all other factors are identical, a person who weighs more will have a higher BMR than a person who weighs less.
2. BMR is the amount of energy that must be consumed by a person at rest to maintain his or her body weight. It is related to the energy used during cellular respiration.
3. The BMR does not determine exactly how many calories to consume each day as it only accounts for resting energy expenditure and does not consider activity levels.
4. Losing weight can change BMR as lean muscle mass may be affected, and muscle burns more calories at rest than fat.
5. Vigorous exercise increases overall energy expenditure, but the BMR is the resting rate. One may need to consume more than BMR to maintain weight if exercising vigorously.

Answer:

• If all other factors are identical, a person who weighs more will have a higher BMR than a person who weighs less.
• Basal metabolic rate includes the energy consumed by the body during cellular respiration.