Which of the Following Statements Is Not True About the Coenzyme

question 22

Multiple Choice

Which of the following statements is not true about the coenzyme tetrahydrofolate (THF) ?

• A)There are six different THF-coenzymes.
• B)The coenzyme is used by enzyme-catalyzing reactions that donate a group containing a single carbon to their substrate.
• C)THF results from the reduction of two double bonds of the precursor vitamin (folate).
• D)Mammals synthesize the vitamin (folate)but bacteria cannot.
• E)Homocysteine methyl transferase and glycinamide ribonucleotide are examples of enzymes that require THF-coenzyme.

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