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Questions and Answers
Where does absorption occur in the small intestine?
Which type of digestion mechanism involves the breakdown of food by enzymes on the surface of enterocytes?
Which transporter uses secondary active transport to transport glucose and galactose?
Which of the following is NOT a type of digestion mechanism?
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What is the name of the transporter that uses secondary active transport to transport glucose and galactose?
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Which enzyme digests lactose into galactose and glucose?
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Which type of enzyme digests lactose into galactose and glucose?
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Where are fats absorbed in the small intestine?
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Which membrane transports glucose, galactose, and fructose via facilitated diffusion into the blood vessels within the villus enterocytes?
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Where are proteins and carbohydrates absorbed into?
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Study Notes
- Absorption occurs in the villus of the small intestine, while secretion occurs in the crypt of the small intestine.
- There are five types of digestion mechanisms, including none, brush border hydrolysis, luminal hydrolysis, intracellular hydrolysis, and luminal hydrolysis with intracellular resynthesis.
- Proteins and carbohydrates are absorbed into the blood vessels, while fats are absorbed into the triglyceride lacteal.
- The digestion and absorption of carbohydrates involve the SGLT1 and GLUT5 transporters on the apical membrane and facilitated diffusion on the basolateral membrane.
- The SGLT1 transporter uses secondary active transport to transport glucose and galactose.
- The GLUT5 transporter transports fructose via facilitated diffusion.
- Brush border enzymes include maltase, lactase, sucrase, and isomaltase.
- Maltase digests maltose into glucose, while sucrase digests sucrose into fructose and glucose.
- Lactase digests lactose into galactose and glucose.
- The basal lateral membrane transports glucose, galactose, and fructose via facilitated diffusion into the blood vessels within the villus enterocytes.
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Description
Test your knowledge on the intricate processes of digestion and absorption in the small intestine with this quiz! From the types of digestion mechanisms to the transporters involved in carbohydrate absorption, this quiz covers it all. Brush up on your knowledge of brush border enzymes and learn about the different ways in which nutrients are absorbed into the blood vessels and triglyceride lacteal. Challenge yourself with this quiz and become an expert on the fascinating world of small intestine absorption and digestion.
