Question

Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles. 
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below

• A. Both Statement I and Statement II are correct.
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Answer 1

The Correct Option is C

This problem requires the analysis of two statements concerning mitochondria and chloroplasts to ascertain their accuracy.

Statement I: Both mitochondria and chloroplasts are organelles enclosed by a double membrane.

Statement I is accurate. Mitochondria and chloroplasts possess two membranes each. In mitochondria, the outer and inner membranes constitute the organelle's structure. Likewise, chloroplasts are enclosed by an outer membrane and an inner thylakoid membrane.

Statement II: The inner membrane of mitochondria exhibits lower permeability compared to that of chloroplasts.

Statement II is inaccurate. The inner mitochondrial membrane is highly selective and less permeable, a crucial feature for sustaining the proton gradient required for ATP generation during cellular respiration. In contrast, the inner membrane of chloroplasts, specifically the thylakoid membrane, is integral to photosynthesis. While it exhibits reduced permeability in certain aspects, it is subject to different functional requirements than that of mitochondria. Therefore, a direct comparison of their permeability without specific contextualization is not appropriate.

Consequently, the correct determination is: Statement I is correct, while Statement II is incorrect.