Question

Electron transport system involved during light reaction is located on:

• A. Outer membrane of mitochondria
• B. Inner membrane of mitochondria
• C. Thylakoid of grana
• D. Inner plastid membrane

Answer 1

The correct option is C Thylakoid of grana

The photosystems and electron transport system (ETS) involved during light reactions are embedded in the thylakoid membrane. The electron transport system includes a series of electron carriers. The electrons released by the photosystems pass through the electron transport system. The ETS uses the energy from electrons to pump hydrogen ions into the interior of the thylakoid.