Re-NEET 2026 · Question 96 · Class 11

Respiration in Plants

Mitochondrial inner membrane encloses ______.

  1. (A)matrix
  2. (B)cytosol
  3. (C)mucus
  4. (D)aqueous humor

The NCERT line that answers it

Verbatim line

Acetyl CoA then enters the tricarboxylic acid pathway or Krebs' cycle operating in the matrix of the mitochondria.

Chapter
Respiration in Plants
Section
12.7 RESPIRATORY QUOTIENT
Page
11
Words matched
18 of 18

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

6667, emb=0.4581, combined=0.5415). Verified: high — The span explicitly states that the Krebs' cycle operates in the matrix of the mitochondria, directly identifying the matrix as the substance enclosed by the inner membrane.

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Question text is reproduced from the published Re-NEET 2026 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.