GI Tract and Digestion Process

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Questions and Answers

What is the primary form in which carbohydrates are absorbed?

  • Monosaccharides (correct)
  • Oligosaccharides
  • Polysaccharides
  • Disaccharides

What type of transport is used for the absorption of glucose and galactose into epithelial cells?

  • Active transport (correct)
  • Passive transport
  • Simple diffusion
  • Facilitated diffusion

What is the primary form in which proteins are absorbed into the bloodstream?

  • Dipeptides
  • Amino acids (correct)
  • Polypeptides
  • Tripeptides

How do long-chain fatty acids and monoglycerides cross the epithelial cell membrane?

<p>As part of micelles (C)</p> Signup and view all the answers

What is the function of lipoproteins in the transportation of lipids?

<p>To make lipids soluble in water (D)</p> Signup and view all the answers

What is the term for the protein-coated spherical masses that transport lipids in the bloodstream?

<p>Chylomicrons (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of lipid absorption?

<p>Active transport (C)</p> Signup and view all the answers

What is the primary route by which chylomicrons enter the bloodstream?

<p>Through the lymphatic system (B)</p> Signup and view all the answers

What is the reason why lipids must be combined with protein transporters to be transported in the bloodstream?

<p>Because they are insoluble in water (C)</p> Signup and view all the answers

Which of the following is a characteristic of amino acid absorption?

<p>Active transport (D)</p> Signup and view all the answers

Flashcards

Carbohydrate Absorption Form

Monosaccharides are the primary form of carbohydrates absorbed.

Glucose/Galactose Transport

Active transport moves glucose and galactose across epithelial cells.

Protein Absorption Form

Amino acids are the primary form of protein absorption.

Lipid Absorption Mechanism

Long-chain fatty acids and monoglycerides form micelles to cross the membrane.

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Lipoprotein Function

Lipoproteins make lipids soluble in water for transport.

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Chylomicron Structure

Protein-coated lipid spheres, transporting lipids in the blood.

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Lipid Absorption Method

NOT active transport in lipid absorption, but micelle formation.

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Chylomicron Entry Route

Chylomicrons enter the bloodstream via the lymphatic system.

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Lipid Blood Transport Need

Lipids require proteins for blood transport due to insolubility in water.

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Amino Acid Absorption Method

Amino acid absorption uses active transport.

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