Which of the Following Is Evidence That the Entner-Doudoroff (ED)

question 57

Multiple Choice

Which of the following is evidence that the Entner-Doudoroff (ED) route might have evolved earlier than the Embden-Meyerhoff-Parnas pathway (EMP) ?

• A) ED involves a larger number of reactions and produces more energy and reducing equivalents with respect to EMP.
• B) 6-phosphogluconate is dehydrated to form pyruvate and glyceraldehyde 3-phosphate, which may then reenter the EMP pathway.
• C) ED involves fewer substrate-level phosphorylations and yields less energy and fewer reductants than EMP.
• D) All of the above.
• E) None of the above.

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