Category: Everyday Science | Last updated: 2026-09-18

Which cellular organelle is responsible for generating most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy?

A) Ribosome
B) Mitochondrion
C) Endoplasmic Reticulum
D) Golgi Apparatus

Explanation

Mitochondria are often called the 'powerhouses of the cell' because they are the primary sites of cellular respiration, the process that produces ATP.

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