Class 11 · Photosynthesis in Higher Plants

RuBP Regeneration & ATP Role — NEET Biology

🔥 Predicted for NEET 2027
📖 NCERT Source

Regeneration – Regeneration of the CO2 acceptor molecule RuBP is crucial if the cycle is to continue uninterrupted. The regeneration steps require one ATP for phosphorylation to form RuBP.

NCERT Biology · Class 11 · Chapter 11 · Paragraph 58
Why This May Be Tested in NEET 2027

Adjacent to a frequently-asked paragraph in the same chapter.

Practice This Concept
QuestionPredicted for NEET 2027

Why is regeneration of RuBP essential for the continuation of the Calvin cycle?

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: D To sustain continuous CO₂ fixation

RuBP acts as the CO₂ acceptor and must be regenerated to fix more CO₂.

❓ Frequently Asked Questions
What does NCERT say about Regeneration Regeneration CO2 acceptor?
Regeneration – Regeneration of the CO2 acceptor molecule RuBP is crucial if the cycle is to continue uninterrupted. The regeneration steps require one ATP for phosphorylation to form RuBP.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Photosynthesis in Higher Plants, Class 11 NCERT Biology.

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.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

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