Digestive System Functions and Processes

The video tutorial covers the processes of digestion and absorption, explaining how food is broken down into monomers for absorption in the small intestine. It highlights the role of enzymes in lowering activation energy for biochemical reactions, detailing specific enzymes like salivary amylase, pepsin, and lipase. The anatomy of the digestive system is discussed, including the functions of the stomach and intestines. The video also explains fluid and nutrient absorption, focusing on the role of villi and lacteals. Finally, it describes the digestion of macronutrients such as carbohydrates, lipids, and proteins.

What is the primary purpose of breaking down food into monomers during digestion?

• To allow absorption into the small intestine

• To change the color of food

• To make food taste better

• To increase the size of food particles

Which enzyme is responsible for breaking down starch in the mouth?

• Nuclease

• Salivary amylase

• Lipase

• Pepsin

What is the optimal pH for pepsin activity in the stomach?

• Very high

• Very low

• Slightly acidic

• Neutral

Which organ is responsible for storing bile?

• Liver

• Pancreas

• Gallbladder

• Appendix

What is the primary function of the small intestine?

• To break down vitamins

• To store food

• To absorb nutrients into the bloodstream

• To produce bile

Which structure in the digestive system is responsible for the initial breakdown of proteins?

• Large intestine

• Mouth

• Stomach

• Small intestine

Which part of the digestive system is primarily responsible for water absorption?

• Small intestine

• Esophagus

• Large intestine

• Stomach

What is the role of villi in the small intestine?

• To secrete digestive enzymes

• To increase surface area for absorption

• To produce bile

• To store nutrients

Which vitamin is important for blood clotting and is produced in the large intestine?

• Vitamin D

• Vitamin A

• Vitamin C

• Vitamin K

What happens to glucose after it is absorbed in the small intestine?

• It is converted into amino acids

• It is stored in the stomach

• It is excreted as waste

• It enters the bloodstream