Question

The enzymes for electrons transport system are located in the

• A. Plastid
• B. Endoplasmic reticulum
• C. Ribosomes
• D. Mitochondria
• E. Golgi bodies

Answer 1

The correct option is D Mitochondria

Plastids are the site for photosynthetic fixation of carbon dioxide into carbohydrates. ER is eukaryotic organelle and serves in synthesis and transport of proteins and lipids. Ribosomes are the site of protein synthesis. Golgi body serves to processes secretory and synthetic products from the ER and then transports the finished products into cell part or secretes them to the outside of the cell. Mitochondria are double membrane bound eukaryotic cell organelles and serve as the site for cellular respiration. Electron transport system is present in the inner mitochondrial membrane and passes the electrons down a series of carriers and pump protons into the intermembrane space. Thus, the correct answer is option D.