Class 11 · Biomolecules

Enzyme Regulation by Chemical Inhibitors — NEET Biology

🔥 Predicted for NEET 2027
📖 NCERT Source

The activity of an enzyme is also sensitive to the presence of specific chemicals that bind to the enzyme. When the binding of the chemical

📐See NCERT Figure 9.5 for the diagram.
NCERT Biology · Class 11 · Chapter 9 · Paragraph 51
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

Regarding catalytic cycle of an enzyme action, select the correct sequential steps: [NEET 2024] A. Substrate enzyme complex formation B. Free enzyme ready to bind with another substrate C. Release of products D. Chemical bonds of the substrate broken E. Substrate binding to active site

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: A E, A, D, C, B

The substrate first binds to the enzyme’s active site (E) Enzyme-substrate complex is formed (A) Substrate bonds are broken (D) Products are released (C) Enzyme is ready to bind again (B)

❓ Frequently Asked Questions
What does NCERT say about activity enzyme also sensitive?
The activity of an enzyme is also sensitive to the presence of specific chemicals that bind to the enzyme. When the binding of the chemical
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?
Biomolecules, 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.

176 of 180 ReNEET 2026 questions traced to MedicNEET17,000+ Biology questionsHindi + English
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