During the fasting phase,the body (excluding the brain)cannot use glucose as a metabolic fuel because
A) there is none left.
B) it is all stored in neurons.
C) insulin levels are low and insulin is needed for glucose to enter the cells of the body.
D) glycogen is needed for glucose to enter the cells of the body.
E) glucose is needed for insulin to enter the cells of the body.

Question

Quizplus · Accepted Answer

During the fasting phase, insulin levels are low, and insulin is needed for glucose to enter the cells of the body. Without insulin, glucose remains in the bloodstream and cannot be used by the body for energy. The brain can use glucose as a metabolic fuel even when insulin levels are low because it does not require insulin for glucose uptake.

During the Fasting Phase,the Body (Excluding the Brain)cannot Use Glucose