Digestive System Overview

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Questions and Answers

What is the function of lipase in pancreatic juice?

  • Increasing surface area for absorption
  • Digesting proteins
  • Breaking down fats into fatty acids and glycerol (correct)
  • Converting complex carbohydrates into glucose

Where are the enzymes present that finally convert proteins to amino acids, complex carbohydrates to glucose, and fats to fatty acids and glycerol?

  • Anal sphincter
  • Large intestine
  • Walls of the small intestine (correct)
  • Pancreatic juice

What is the role of villi in the small intestine?

  • Regulating the exit of waste material
  • Increasing surface area for absorption (correct)
  • Removing waste material
  • Secreting digestive enzymes

How does dental caries or tooth decay begin?

<p>With bacteria producing acids that softens enamel (B)</p> Signup and view all the answers

What happens when masses of bacterial cells and food particles stick to teeth?

<p>Plaque covers the teeth preventing acid production (B)</p> Signup and view all the answers

What is the function of the sphincter muscle in the context of the digestive system?

<p>Regulates the exit of food from the stomach into the small intestine (A)</p> Signup and view all the answers

Why do herbivores have longer small intestines compared to carnivores?

<p>To allow digestion of cellulose present in grass (B)</p> Signup and view all the answers

What role does bile juice play in the small intestine?

<p>Emulsifying fats by breaking them down into smaller globules (B)</p> Signup and view all the answers

How does the small intestine prepare food for pancreatic enzymes to act effectively?

<p>By emulsifying fats into smaller globules (A)</p> Signup and view all the answers

Why is it difficult for enzymes to act on fats in the small intestine at first?

<p>Fats are present in large globules (C)</p> Signup and view all the answers

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