nucleus cytoplasm mitochondria endoplasmic reticulum
I gave my students this multiple choice question: During a biochemical reaction, pyruvate (C3H4O3) is converted into carbon dioxide (CO2) and water (H2O). In what cellular organelle does this biochemical reaction occur?

Only one answer is correct among these 4 choices:
- nucleus
- cytoplasm
- mitochondria
- endoplasmic reticulum

Could you tell me which one is correct?

mitochondria