MCQ practice · SSC Biology Board questions · Chapter 4: Bioenergetics
In which of the following does the electron transport system occur?
Think it through first, then pick an option.
- a Nucleus
- b Ribosome
- c Lysosome
- d Mitochondria
Answer and explanation
Correct answer: d Mitochondria
Mitochondria (and plastids) are the organelles that carry the electron transport system.
Why the other options are wrong
- a Nucleus: The nucleus holds hereditary information; it has no electron transport system.
- b Ribosome: Ribosomes make protein; they have no electron transport system.
- c Lysosome: Lysosomes digest material; they have no electron transport system.
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