Which of the following is a medium - sized globular protein that acts as a pancreatic serine protease found in the digestive system of many vertebrates?

The correct answer is TrypsinKey Points

•  The medium-sized globular protein you're referring to is trypsin
• Trypsin is a pancreatic serine protease, meaning it belongs to the class of enzymes that cleave peptide bonds in proteins. 
• It is found in the digestive systems of many vertebrates and plays a crucial role in protein digestion by breaking down proteins into smaller peptides
•  It is produced in the pancreas as an inactive precursor, trypsinogen, which is activated in the small intestine.

Additional Information

•  Amylase
  • It Breaks down starch into sugars (maltose and dextrin) during digestion.
  • It is  Found in saliva (salivary amylase) and pancreas (pancreatic amylase).
  • It Begins working in the mouth and continues in the small intestine.
  • It is Vital for carbohydrate digestion and energy production.
• Lipase
  • It Breaks down fats (lipids) into fatty acids and glycerol.
  • It is produced in Pancreas (pancreatic lipase) and also in smaller amounts in the stomach.
  • It Primarily acts in the small intestine.
  • It is Essential for fat digestion and absorption of fat-soluble vitamins.
• Pepsin
  • It Breaks down proteins into smaller peptides (proteolysis).
  • It is produced in Stomach cells as an inactive precursor, pepsinogen, which is activated by stomach acid.
  • It Works in the acidic environment of the stomach.
  • It is Critical for initiating protein digestion in the stomach.