MCQ practice · SSC Biology Board questions · Chapter 4: Bioenergetics
In which organelle do the reactions of the Krebs cycle take place?
Think it through first, then pick an option.
- a Cell cavity
- b Golgi body
- c Ribosome
- d Mitochondrion
Answer and explanation
Correct answer: d Mitochondrion
All the reactions of the Krebs cycle take place in the mitochondrion.
Why the other options are wrong
- a Cell cavity: The cell cavity is not the site of the Krebs cycle.
- b Golgi body: The Golgi body handles secretion and transport; the Krebs cycle is not there.
- c Ribosome: Ribosomes make protein; the Krebs cycle is not there.
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