Which of the Following Is FALSE Regarding the ETS in Escherichia

question 8

Multiple Choice

Which of the following is FALSE regarding the ETS in Escherichia coli?

• A) NDH-1 is the main initial substrate oxydoreductase; NDH-2 is an alternative NADH dehydrogenase.
• B) It pumps 10-12 protons per NADH.
• C) It pumps 2-8 protons per NADH.
• D) The main terminal oxidase is the cytochrome bo quinol oxidase, which contains heme b, heme O3, and Cu.
• E) An alternative cytochrome bd quinol oxidase has a higher affinity for oxygen than other terminal oxidases and allows E. coli growth in low-O₂ habitats.

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