[Campbell Biology P.649] Which of the following statements correctly differentiates between ... | Practice Question
Which of the following statements correctly differentiates between the energy-generating organelles of Diplomonads and Parabasalids?
A: Diplomonads possess mitosomes that produce ATP via electron transport chains, while Parabasalids have hydrogenosomes that release hydrogen gas.
B: Both Diplomonads and Parabasalids use hydrogenosomes for anaerobic energy production, but only Diplomonads are parasites.
C: Diplomonads utilize mitosomes to generate energy anaerobically without electron transport chains, whereas Parabasalids use hydrogenosomes that release hydrogen gas as a by-product.
D: Parabasalids have mitosomes that produce hydrogen gas, while Diplomonads have hydrogenosomes that lack electron transport chains.
Explanation
Diplomonads possess mitosomes, which are reduced mitochondria that function anaerobically and lack electron transport chains. Parabasalids have hydrogenosomes, which are also reduced mitochondria that generate energy anaerobically, but they release hydrogen gas as a by-product.