NADP+ Reduction and Stroma Proton Role — NEET Biology
📚 Practice ConceptThe NADP reductase enzyme is located on the stroma side of the membrane. Along with electrons that come from the acceptor of electrons of PS I, protons are necessary for the reduction of NADP+ to NADPH+ H+. These protons are also removed from the stroma.
Assertion (A): NADP reductase enzyme is involved in NADPH formation during photosynthesis. Reason (R): The NADP reductase enzyme is located on the lumen side of the thylakoid membrane.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms NADP reductase is involved in NADPH formation (Assertion true). However, NCERT states “The NADP reductase enzyme is located on the stroma side of the membrane” - the Reason incorrectly places it on the lumen side (false). This tests understanding of enzyme location relative to where NADPH is actually formed and used.
What does NCERT say about NADP reductase enzyme located?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.