NEETBotanyCell - The Unit of Life
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The inner membrane of mitochondria forms a number of infoldings called cristae towards the matrix. Reason (R): The cristae decrease the surface area of the inner membrane to restrict enzymatic activity. In the light of the above statements, choose the most appropriate answer from the options given
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
C. (A) is correct but (R) is not correct
Step-by-step solution
According to NCERT, the inner membrane of the mitochondrion forms a number of infoldings called the cristae towards the matrix. Therefore, the Assertion is correct. The functional significance of the cristae is that they increase the surface area of the inner membrane, which accommodates the enzymes and electron carriers needed for ATP production. Therefore, the Reason is incorrect because it falsely states that cristae decrease the surface area. Answer: (A) is correct but (R) is not correct