A 35-Year-Old Man Comes to the Office with Progressively Worsening

A 35-year-old man comes to the office with progressively worsening fatigue associated with dark urine and back pain.  Two days ago, the patient ate some large, flat beans brought home by his wife after a business trip to Egypt.  Physical examination shows jaundice and pallor.  Laboratory results reveal a hemoglobin level of 8 g/dL.  Further evaluation reveals deficiency of an enzyme involved in the conversion of glucose-6-phosphate to ribulose-5-phosphate.  The substance generated during this conversion is necessary for which of the following biochemical processes?

A) ADP phosphorylation
B) Fatty acid synthesis
C) Glycogen storage
D) Ketone body synthesis
E) Protein degradation

Correct Answer:

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