Lecture 9 and 10
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Questions and Answers

What is the main function of Glut 1 at the blood-brain barrier?

  • It allows glucose to enter brain without insulin (correct)
  • It pumps glucose into the brain at a steady rate
  • It increases glucose uptake into the brain during low glycemia
  • It helps to store excess glucose in the brain

    • What effect does hypoglycemia (2mmol/l) have on brain function?

  • It impairs brain function (correct)
  • It improves brain function due to increased glucose availability
  • It leads to temporary memory enhancement
  • It has no effect on brain function

    • What is the relationship between glucagon and insulin?

  • Glucagon decreases glucose uptake by the brain
  • Insulin and glucagon have no effect on each other
  • They both increase hepatic and renal glucose production
  • Insulin secretion suppresses glucagon secretion (correct)

    • In Type 1 Diabetes, what happens if more insulin is taken than carbs consumed?

    <p>Hypoglycemia occurs</p> Signup and view all the answers

    Why are sugar sweetened beverages referred to as 'empty calories'?

    <p>They have poor nutrient content but high sugar content</p> Signup and view all the answers

    How can reducing dietary sugar consumption help with obesity?

    <p>It helps reduce calorie intake without essential nutrients</p> Signup and view all the answers

    What is the recommended maximum percentage of total daily energy intake for sugar?

    <p>10%</p> Signup and view all the answers

    Which of the following is true about Glycemic Index (GI)?

    <p>GI measures the amount of sugar in a food item</p> Signup and view all the answers

    What is the relationship between Glycemic Index (GI) and Glycemic Load (GL)?

    <p>Eating a piece of bread results in a low GL but high GI</p> Signup and view all the answers

    How can dietary planning based on Glycemic Index (GI) and Glycemic Load (GL) be beneficial?

    <p>It helps in preventing obesity and managing diabetes</p> Signup and view all the answers

    What are the two types of dietary fiber mentioned in the text?

    <p>Insoluble and soluble fiber</p> Signup and view all the answers

    How does fiber affect nutrient digestion and absorption?

    <p>It decreases mixing of GI content with digestive enzymes</p> Signup and view all the answers

    What is the main function of Short Chain Fatty Acids (SCFAs) in the GI tract?

    <p>They provide energy for colonic cells</p> Signup and view all the answers

    What is the main effect of insoluble fibers mentioned in the text?

    <p>They increase fecal volume and exert detoxifying effect</p> Signup and view all the answers

    What is the recommended daily intake for fiber according to WHO?

    <p>25g to 40g</p> Signup and view all the answers

    How does dietary fiber impact nutrient diffusion?

    <p>It decreases nutrient diffusion</p> Signup and view all the answers

    What are the sources of soluble fiber mentioned in the text?

    <p>Pectin, gums, mucilage's, fruits, legumes, oats, vegetables</p> Signup and view all the answers

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