Question

Why is AMPK called the cell’s fuel gauge?

Short answer

AMPK is the cell’s fuel gauge because it regulates the generation and conservation of the adenosine triphosphate (ATP).

Step-by-step solution

AMPK

AMPK, known as “Activated protein kinase,” is a $\mathit{\alpha }\mathbf{,}\mathit{\beta }\mathbf{,}\mathit{\gamma }$heterotrimer found in all eukaryotic organism example: yeast, humans, etc., and its domain is phosphorylated for activity.

Step 2: AMPK cell’s fuel gauge

Activated protein kinase (AMPK) regulates metabolic homeostasis because it generates the adenosine triphosphate (ATP) by activating the metabolic breakdown pathways and conserves ATP for more vital/important processes by inhibiting biosynthetic pathways therefore known as the cell’s fuel gauge.