Digestive Enzyme Cascade in the Small Intestine

The video explains the enzyme cascade in the small intestine, focusing on how proteins are degraded into amino acids for absorption. It highlights the role of enteropeptidase in activating trypsinogen into trypsin, which then activates other enzymes. The process involves a positive feedback cycle where trypsin can activate more trypsinogen, amplifying enzyme activation. The video emphasizes the importance of trypsin in the digestive process, although it does not delve into the specific functions of each enzyme.

What is the initial enzyme that activates trypsinogen in the small intestine?

• Lipase

• Pepsin

• Enterokinase

• Amylase

Which enzyme is responsible for activating chymotrypsinogen into chymotrypsin?

• Pepsin

• Trypsin

• Amylase

• Lipase

What is the role of trypsin in the enzyme activation cascade?

• It deactivates enzymes

• It activates other enzymes

• It digests carbohydrates

• It absorbs nutrients

Which of the following enzymes is activated by trypsin?

• Amylase

• Lipase

• Pepsin

• Procarboxypeptidase A

What is the significance of the positive feedback mechanism involving trypsin?

• It reduces protein absorption

• It slows down digestion

• It amplifies enzyme activation

• It inhibits enzyme production

How does trypsin contribute to the positive feedback cycle?

• By absorbing amino acids

• By deactivating trypsinogen

• By activating more trypsinogen

• By digesting lipids

What is the overall purpose of the enzyme activation cascade in the small intestine?

• To produce bile

• To digest carbohydrates

• To absorb water

• To degrade proteins into amino acids