resents-the-bacterial-folic-acid-pathway-and-the-order-of-the-two-enzyme-targets

Question

Which sequence correctly represents the bacterial folic acid pathway and the order of the two enzyme targets?

Accepted Answer

PABA → (enzyme A) → dihydrofolic acid → (enzyme B) → tetrahydrofolic acid

Answer

Tetrahydrofolic acid → (enzyme A) → dihydrofolic acid → (enzyme B) → PABA

Answer

PABA → (enzyme B) → tetrahydrofolic acid → (enzyme A) → dihydrofolic acid

Answer

PABA → dihydrofolic acid → tetrahydrofolic acid → (enzyme A and enzyme B act interchangeably on all steps in a network of redundant enzymes)