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. | Part (A) : Matrix – a major site for respiratory chain enzymes |
2. | Part (D) : Outer membrane – gives rise to the inner membrane by splitting |
3. | Part (B) : Inner membrane – forms infoldings called cristae |
4. | Part (C) : Cristae – possess single circular DNA molecule and ribosome |
Consider the following statements:
I. It is postulated that mitochondria and chloroplasts, during evolution, developed a symbiotic relationship, with plant and animal cells.
II. Both mitochondria and chloroplasts are formed de novo during cell division.
III. Both mitochondria and chloroplasts are totally autonomous bodies.
IV. Both mitochondria and chloroplasts have circular DNA associated with histones.
The correct statements include:
(1) None
(2) I only
(3) II, III and IV
(4) I, II and III