MCQ practice · SSC Biology Board questions · Chapter 2: Cells and Tissues of Organisms
In which one does the electron transport system take place?
Think it through first, then pick an option.
- a Nucleus
- b Ribosome
- c Lysosome
- d Mitochondrion
Answer and explanation
Correct answer: d Mitochondrion
The fourth step of respiration, the electron transport system, takes place inside the mitochondrion.
Why the other options are wrong
- a Nucleus: The nucleus is the control centre; the electron transport system does not run there.
- b Ribosome: Ribosomes make protein; the electron transport system does not run there.
- c Lysosome: The lysosome digests waste; the electron transport system does not run there.
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