The enzyme that curdles milk is_____________

Explanation

In the question, you are being asked to identify the enzyme responsible for curdling milk. Enzymes are protein molecules that speed up chemical reactions in the body. Curdling is a process where milk coagulates and forms lumps. Out of the five options provided, the correct answer is Option C, Renin. Renin is an enzyme produced in the stomach of mammals, including humans. It is responsible for curdling milk in the stomach, which makes it easier for the body to digest. Option A, Pepsin, is an enzyme that breaks down proteins in the stomach. Option B, Ptyalin, is an enzyme found in saliva that breaks down starch into sugar. Option D, Amylase, is an enzyme that breaks down carbohydrates into sugars. Option E, Trypsin, is an enzyme produced in the pancreas that aids in the digestion of proteins. To remember the function of Renin, it is helpful to think about the phrase rennet sets the cheese. Rennet is a substance that contains renin and is used in the cheese-making process to curdle milk. In summary, the correct answer to the question is Option C, Renin, which is an enzyme that curdles milk in the stomach to aid in digestion.