NUT1121 Week 3 Tutorial Activities_Answers_default

Introduction

• Week three tutorial for Human Nutrition

• Review of example answers for tutorial activities

Fun Fiber Quiz

Question 1: Food Groups High in Dietary Fiber

• Correct answers: Cereals, grains, fruits, and vegetables.

  • Cereals and Grains:

    • Whole grain products (e.g., whole grain rye bread, rolled oats)

    • Contain 1-2 grams or more of dietary fiber per serving.

  • Fruits:

    • Fresh, frozen, and dried fruits contain about 2 grams of fiber per serving.

    • Examples: Medium-sized apple, banana, orange = 1 serving; 0.5 cups of berries.

    • Note: Fruit juices have little to no dietary fiber.

  • Vegetables:

    • Generally provide 2-3 grams of fiber per serving.

    • Examples: 0.5 cups cooked vegetables (e.g., broccoli, carrots), 0.5 cups chopped raw carrots or capsicum.

Question 2: Definition and Types of Dietary Fiber

• Dietary Fiber:

  • Three types: Insoluble fiber, soluble fiber, resistant starches.

  • Insoluble Fiber:

    • Does not dissolve in water, does not form gel, and is less readily fermented.

    • Found in grains and vegetables; promotes bowel movements.

  • Soluble Fiber:

    • Dissolves in water, forms gel, fermentable by bacteria in the colon.

    • Health benefits include lowering cholesterol and protecting against heart disease.

  • Resistant Starches:

    • Found in foods like legumes, cold cooked potatoes, and unripe bananas.

    • Pass to large intestine, improving bowel health.

Question 3: Nutrient Reference Values for Fiber

• Recommended daily fiber intake:

  • For men and women in Australia and New Zealand (not specified in transcript).

Question 4: Suggestions for Increasing Fiber Content

• Analyze current diet and suggest high-fiber alternatives:

  • Example swap: White toast for wholemeal toast.

  • Increase in fiber intake: Approximately 16 grams by making suggestions.

Short Answer Questions on Carbohydrates

Question 1: Amylose Starch Digestion Speed

• Suggested answer includes relevant details (not specified).

Question 2: Blood Glucose Homeostasis

• Explain regulation and hormones involved (insulin and glucagon mentioned).

Nutrition Calculations on Carbohydrates

Activity Overview

1. Calculate carbohydrate intake for Tessa:

   • Answer: 306 grams of carbohydrates per day.

2. Carbohydrate contribution to George's energy intake:

   • Answer: 47% of daily intake.

3. Carbohydrate contribution to Jim's energy intake:

   • Answer: 69% of daily intake.

Examining Albert's Carbohydrate Intake Using FoodWorks

Questions Overview

1. Total carbohydrate intake for Albert:

   • 506.78 grams (rounded to 507 grams).

2. Meal contributing most carbohydrates:

   • Breakfast: 134.27 grams (rounded to 134 grams).

3. Carbohydrate content in lemonade drink:

   • 34.32 grams (rounded to 34 grams).

4. Percentage of energy from lemonade that was sugar:

   • 100% (lemonade carbohydrate content is pure sugar).

5. Total sugar in Albert's intake:

   • 277.02 grams (rounded to 277 grams).

6. Top five foods contributing sugar:

   • Examples with percentages: soft drink, thick shake, cow's milk, Tim Tams, coffee.

7. Total starch in food intake:

   • 214.44 grams (rounded to 214 grams).

8. Top three foods contributing most starch:

   • McDonald's fries, Big Mac, Wonder White sandwich bread.

9. Proportion of total energy from carbohydrates:

   • 43% based on the calculation.

10. Kilojoules represented by carbohydrate energy percentage:

• 8,615.26 kilojoules (rounded down).

11. Dietary fiber intake for Albert:

• 47.17 grams (rounded to 47 grams).

12. Meal contributing most dietary fiber:

• Breakfast: 18.16 grams (rounded to 18 grams).

13. Did Albert meet AI for dietary fiber?

• Yes, approximately 157% of adequate intake met.

14. Top three sources of dietary fiber:

• Kellogg's Sultana brand, Wonder White sandwich bread, mixed nuts.

Conclusion

• References provided for week three tutorial activities.

• Encouragement to post questions or ideas on the Canvas discussion forum.