Per NCERT, the inner membrane of a mitochondrion has finger-like projections called CRISTAE. What is their primary purpose?
ATo make the mitochondrion look pretty
BTo increase the surface area for energy-producing chemical reactions
CTo store sugars
DTo prevent water entry
Answer & Solution
Correct answer: B. To increase the surface area for energy-producing chemical reactions
Per NCERT §2.3, cristae increase the surface area available for respiratory reactions, boosting energy output. The other options misstate.
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