QUESTION 1 NASA has sent a series of Mars rovers to that planet since the late 1

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QUESTION 1 NASA has sent a series of Mars rovers to that planet since the late 1990s to look for signs of life. Consider the following hypothetical situation: A fungal organism capable of undergoing both fermentation and oxidative phosphorylation hitched a ride from Earth to Mars on one of the rovers. Since the organism is able to use er rate transport chain. Which of these elements would be the most likely candidate to act as un alternative electron acceptor in oxidative phosphorylation? (HINT: look at a periodic table.) None, only oxygen can be oxidized. Orubidium (Rb) Opolonium (Po) silicon (S) aluminum (A)

Explanation / Answer

Among the options given, silicon is the most electronegative atom and thus has the most ability to accept electrons towards it. Therefore silicon will act as an alternative acceptor. Next to Oxygen, silicon is most electronegative

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