Which organelle contains a circular maternally inherited genome and has folds called cristae in its inner membrane?

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Multiple Choice

Which organelle contains a circular maternally inherited genome and has folds called cristae in its inner membrane?

Explanation:
Cristae are folds of the inner mitochondrial membrane that massively boost the surface area available for the electron transport chain and ATP production. Mitochondria also harbor their own circular DNA, which is inherited maternally in many organisms. Although chloroplasts have DNA as well, their internal membranes are organized into thylakoids rather than cristae, and peroxisomes lack a genome and the distinctive inner membrane folding. So the organelle described is the mitochondrion.

Cristae are folds of the inner mitochondrial membrane that massively boost the surface area available for the electron transport chain and ATP production. Mitochondria also harbor their own circular DNA, which is inherited maternally in many organisms. Although chloroplasts have DNA as well, their internal membranes are organized into thylakoids rather than cristae, and peroxisomes lack a genome and the distinctive inner membrane folding. So the organelle described is the mitochondrion.

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