Humans expend most of their energy on what activity?
A) walking, running, and other forms of locomotion
B) in the beating of their hearts and blood circulation
C) propagating action potentials in the billions of neurons in the nervous system
D) maintaining basal metabolism

Question

Quizplus · Accepted Answer

Maintaining basal metabolism consumes the most energy in the human body, accounting for 50-80% of the total energy expenditure. This includes essential functions such as maintaining body temperature, breathing, and organ function. Walking, running, and other forms of locomotion, while important, only account for a small fraction of total energy expenditure. The beating of the heart and blood circulation also consume a significant amount of energy, but still less than basal metabolism. The propagation of action potentials in the nervous system is also energy-intensive but still less than basal metabolism.

Humans Expend Most of Their Energy on What Activity