NEET 2011 · Class 11

Cell: The Unit of Life

[DIAGRAM: A mitochondrion showing its internal structure with labels A, B, C and D; A indicates the matrix, B the inner membrane, C a crista, and D the outer membrane.] The figure below shows the structure of a mitochondrion with its four parts labelled A, B, C and D. Select the part correctly matched with its function.

  1. (A)D (outer membrane) - gives rise to inner membrane by splitting
  2. (B)B (inner membrane) - forms infoldings called cristae
  3. (C)C (crista) - possesses single circular DNA molecule and ribosomes
  4. (D)A (matrix) - major site for respiratory chain enzymes

The NCERT line that answers it

Verbatim line

The inner membrane forms a number of infoldings called the cristae (sing.: crista) towards the matrix (Figure 8.7).

Chapter
Cell: The Unit of Life
Section
8.5.4 Mitochondria
Page
12
Words matched
18 of 18

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

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'The inner membrane forms a number of infoldings called the cristae', which directly matches option B's claim that the inner membrane forms infoldings called cristae.

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