Which of the Following Statements Is Not True About the Coenzyme

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.