Final answer:
Elisa's tiredness is likely due to mitochondrial dysfunction leading to decreased ATP production, which reduces the energy available to her cells, causing fatigue.
Step-by-step explanation:
The question explores the relationship between the function of mitochondria and symptoms of tiredness as experienced by a person named Elisa.
Mitochondria are responsible for converting glucose from food into ATP (adenosine triphosphate), which is the primary energy carrier in cells. When fewer molecules of ATP are produced due to mitochondrial dysfunction, cells have less energy to perform their functions.
This lack of cellular energy can manifest as symptoms of tiredness or fatigue in an individual. Cellular respiration, specifically the Krebs cycle and electron transport chain, which occur in mitochondria, are critical for the efficient production of ATP.