44.

Tetrahydrofolate is a cofactor in the following conversion(s):

1. glycine --> serine.
2. histidine -> glutamate.
3. serine -> glycine.
4. homocysteine -> methionine.

One or more answers are correct. Click on:

• a. if 1, 2, and 3 are correct
• b. if 1 and 3 are correct
• c. if 2 and 4 are correct
• d. if only 4 is correct
• e. if all are correct