Photosystem I is located predominantly in the _____?

فوٹو سسٹم میں بنیادی طور پر _____ میں واقع ہے؟

Stroma of the chloroplast

Lumen of the thylakoid membrane

Unstacked regions of the thylakoid membrane

None of these

Explanation

Photosystem I (PSI) is mainly located in the unstacked thylakoid membrane (stroma lamellae), where it efficiently interacts with electron carriers.

These regions provide space for PSI to perform cyclic and non-cyclic photophosphorylation without interference from Photosystem II (PSII).