In a chloroplast the highest number of protons are found:
Stroma
Lumen of thylakoids
Inter membrane space
Antennae complex
As learnt
Chemiosmotic hypothesis of ATP formation -
Electron transport both in respiration and photosynthesis produces a proton gradient in the outer chamber or intermembrane space of mitochondria and inside the thylakoid lumen in chloroplasts.
- wherein
Propounded by Peter Mitchell (1961)
Proton gradient is produced in intermembrane space and inside the thylakoid lumen but higher number in the later.
Option 1)
Stroma
This option is incorrect
Option 2)
Lumen of thylakoids
This option is correct
Option 3)
Inter membrane space
This option is incorrect
Option 4)
Antennae complex
This option is incorrect