Digestive System and Nutrition Quiz
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Questions and Answers

What is the primary role of the digestive system?

  • Absorption of nutrients only
  • Ingestion of food and absorption of nutrients
  • Breakdown of food into smaller components (correct)
  • Formation of important materials needed by the body
  • Which of the following is NOT a biological molecule found in food?

  • Proteins
  • Fats
  • Carbohydrates
  • Vitamins (correct)
  • Where does digestion start in the human digestive system?

  • Rectum
  • Stomach
  • Mouth (correct)
  • Small intestine
  • Which organ secretes substances to aid digestion?

    <p>Pancreas</p> Signup and view all the answers

    What happens to food after it is digested?

    <p>Delivered to the cells through the blood stream</p> Signup and view all the answers

    Which organ activates the defecation reflex to release feces?

    <p>Rectum</p> Signup and view all the answers

    What is the primary function of the digestive system?

    <p>Breaking down food into smaller components</p> Signup and view all the answers

    Which of the following is NOT a task of the digestive system?

    <p>Transporting oxygen in the body</p> Signup and view all the answers

    What are carbohydrates, proteins, and fats in relation to food?

    <p>Biological molecules providing energy</p> Signup and view all the answers

    Which organs are considered accessory organs in the human digestive system?

    <p>Gallbladder</p> Signup and view all the answers

    How do nutrients from digested food reach the body's cells for utilization?

    <p>Through the digestive tract lining to the blood stream</p> Signup and view all the answers

    What initiates the defecation reflex in the digestive system?

    <p>Rectum</p> Signup and view all the answers

    Why is digestion necessary before nutrients can be absorbed by the body?

    <p>To reduce food to simple substances for absorption</p> Signup and view all the answers

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