NEET
- Exam
- NEET
- Subject
- Botany
- Chapter
- Respiration in Plants
NEET · Botany · Respiration in Plants
Where is cytochrome c located?
Where is cytochrome c located?
Options
- AInner surface of the inner mitochondrial membrane
- BOuter surface of the inner mitochondrial membrane
- CMitochondrial matrix
- DOuter mitochondrial membrane
Correct answer
B. Outer surface of the inner mitochondrial membrane
Step-by-step solution
Ubiquinone also receives reducing equivalents via FADH2 (complex II) that is generated during oxidation of succinate in the citric acid cycle. The reduced ubiquinone (ubiquinol) is then oxidized with the transfer of electrons to cytochrome c via cytochrome bc 1 complex (complex III). Cytochrome c is a small protein attached to the outer surface of the inner membrane and acts as a mobile carrier for transfer of electrons between complex III and IV. Complex IV refers to cytochrome c oxidase complex containing cytochromes a and a3 , and two copper centres.