Unlocking Energy: The Role of Enzymes in Digestion and Nutrient Absorption

The video explains how food is digested and absorbed into the bloodstream. It covers the role of enzymes in breaking down large food molecules into smaller ones that can be absorbed. Carbohydrates are digested by amylase, proteins by protease enzymes like pepsin and trypsin, and lipids by lipase after emulsification. The video also highlights the different conditions required for enzyme activity in the stomach and small intestine.

What is the primary purpose of digestion in the human body?

• To break down food into smaller molecules for absorption

• To store food for later use

• To eliminate waste from the body

• To increase the size of food particles

Which enzyme is responsible for breaking down starch into glucose?

• Trypsin

• Amylase

• Pepsin

• Lipase

Where does the initial chemical breakdown of carbohydrates begin?

• In the small intestine

• In the pancreas

• In the mouth

• In the stomach

Which enzyme is active in the stomach to digest proteins?

• Trypsin

• Amylase

• Pepsin

• Lipase

Why is trypsin used in the small intestine instead of pepsin?

• Trypsin is stronger than pepsin

• Pepsin is not produced in the pancreas

• Trypsin is more effective at a higher pH

• Pepsin is only active in the mouth

What is the role of emulsification in lipid digestion?

• To convert lipids into proteins

• To increase the acidity of lipids

• To store lipids for energy

• To break lipids into smaller droplets

Which enzyme breaks down lipids into fatty acids and glycerol?

• Trypsin

• Lipase

• Pepsin

• Amylase

What is the main function of bile in digestion?

• To break down carbohydrates

• To neutralize stomach acid

• To emulsify fats

• To digest proteins

Which enzyme is released from the pancreas to aid in carbohydrate digestion in the small intestine?

• Lipase

• Pepsin

• Amylase

• Trypsin

What is the final product of protein digestion that can be absorbed into the bloodstream?

• Glycerol

• Fatty acids

• Amino acids

• Glucose