Digestion and Absorption Quiz

What is the main function of the stomach in the digestive system?

• To regulate body temperature

• To store water and nutrients

• To break down and digest food

• To produce hormones for digestion

How does the stomach break down food during chemical digestion?

• By using saliva and mucus

• By using gastric juices containing hydrochloric acid and enzymes

• By using only water and bile

• By using mechanical force only

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Where does the majority of nutrient absorption take place in the digestive system?

• Esophagus

• Stomach

• Small intestine

• Large intestine

What is the role of villi in the small intestine?

• Transport of oxygen in the bloodstream

• Absorption of nutrients

• Regulation of blood sugar levels

• Production of stomach acid

Which enzyme is responsible for breaking down carbohydrates in the digestive system?

• trypsin

• lipase

• amylase

• pepsin

What is the function of peristalsis in the digestive system?

• To regulate the body's temperature

• To help break down food into nutrients

• To move food through the digestive system

• To produce enzymes for digestion

How do enzymes help in the process of digestion?

• Enzymes have no role in the process of digestion

• Enzymes only work on inorganic substances

• Enzymes break down large molecules into smaller molecules

• Enzymes combine large molecules into even larger molecules

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What happens to nutrients after they are absorbed into the bloodstream?

• They are converted into energy immediately

• They are excreted through the skin

• They are transported to various cells and tissues in the body.

• They are stored in the stomach

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How does the small intestine maximize nutrient absorption?

• Having a short small intestine

• Reducing the number of villi and microvilli

• Eating large meals

• Large surface area, specialized cells, villi, and microvilli

What are the main nutrients absorbed into the bloodstream during digestion?

• vitamins and minerals

• fiber and water

• sugar and salt

• carbohydrates, proteins, and fats