Question

mitochondria are often called the powerhouses of the cell. what specific process do they perform to earn this title?
they break down worn - out organelles and cellular debris.
they perform cellular respiration to produce atp, the cells main energy - carrying molecule.
they synthesize proteins and hormones for export from the cell.
they use light energy, water, and carbon dioxide to create glucose.

Explanation:

Mitochondria are known as the "powerhouses" of the cell because they carry out cellular respiration. Cellular respiration is the process by which cells convert nutrients (such as glucose) into adenosine triphosphate (ATP). ATP is the cell's main energy - carrying molecule.

Breaking down worn - out organelles and cellular debris is a function of lysosomes. Synthesizing proteins and hormones for export from the cell is mainly the function of the endoplasmic reticulum and Golgi apparatus. Using light energy, water, and carbon dioxide to create glucose is the process of photosynthesis, which occurs in chloroplasts (in plant cells).

Answer:

They perform cellular respiration to produce ATP, the cell's main energy - carrying molecule.