MCAT Biology : Cellular Processes and Functions

Study concepts, example questions & explanations for MCAT Biology

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Example Questions

Example Question #4 : Other Cell Processes

Apoptosis can be induced by mitochondria via the release of which protein from the mitochondrial inner membrane? 

Possible Answers:

NADPH

ATP synthase

Ubiquinone

Cytochrome C

NADH

Correct answer:

Cytochrome C

Explanation:

During the intrinsic cycle of apoptosis, the mitochondrial outer membrane becomes permeable to cytochrome C. The release of cytochrome C induces multiple cellular processes that lead to apoptosis. 

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