Answer :
Answer:
ketone bodies
Explanation:
In condition of hypoglycemia, the blood glucose and glycogen drops. Therefore ketone bodies replaces glucose as source of metabolite.
The ketone body is produced from the beta oxidation of fatty acid in mitochondrial of the liver; to obtain Acetyl-Co enzyme A.The latter is used for the biosynthesis of Ketone bodies, which diffused across the blood-brain -barrier(BBB) to the brain to act as metabolic substrate.Thus replacing glucose momentarily to sustain the brain.This result in elevated rise of blood ketone bodies concentration.