While science cannot describe "thinking" in physical terms, we are certain that the process involves metabolism inside brain cells. With positron emission tomography (PET scan), it is possible to inject short-lived isotopes and image the regions of the brain that have the most active metabolism during various mental activities. However
A) thought cannot be linked to cell processes because energy is not related to matter.
B) since thoughts can occur over and over, the requirement for a continual input of energy to prevent entropy does not apply to this cell activity.
C) the cellular energy expended in thinking must be less than the chemical bond energy supplied in food to these brain cells.
D) "thinking" is beyond the scope of science to study.
E) "thinking" is not a cellular process and therefore does not require energy.

Question

Quizplus · Accepted Answer

The statement mentions that "the process involves metabolism inside brain cells." This means that cellular energy is indeed expended during thinking. The statement also suggests that the energy supplied through food is greater than the energy expended during thinking, so the requirement for a continual input of energy to prevent entropy is not violated. Therefore, choice C is the best answer.

While Science Cannot Describe "Thinking" in Physical Terms, We Are