Multiple choice Which of the following enzymes is not present in the body of frog? Maltase Lactase Rennin Pepsin Reveal answer Fill a bubble to check yourself C Correct answer Explanation Frogs possess digestive enzymes like maltase, lactase, and pepsin. However, rennin (chymosin) - the enzyme that curdles milk in mammalian infants - is absent since frogs don't nurse their young with milk.