Nokea
Explain what is meant by positive nitrogen balance and how it applies to the rapid growth of childhood and pregnancy.
- A. Positive nitrogen balance occurs when nitrogen intake exceeds excretion, supporting growth.
- B. It is critical during childhood for tissue development.
- C. It supports fetal growth and maternal tissue expansion in pregnancy.
- D. It occurs only in adults with high protein diets.
Correct Answer: A,B,C
Rationale: Positive nitrogen balance supports rapid tissue growth in childhood and pregnancy by ensuring more protein is available than lost.
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For nutrients to be utilized, they must first be absorbed into the bloodstream from the GI tract. This is accomplished by uptake of the nutrients into the
- A. Arteries providing the GI tract with blood supply.
- B. Veins carrying deoxygenated blood away from the GI tract.
- C. Capillaries located in the intestinal wall villi.
- D. Vessels in the pylorus of the stomach.
Correct Answer: C
Rationale: Capillaries in the intestinal villi absorb nutrients, which are then transported to the bloodstream.
A new food label will now include which information?
- A. Added sugars
- B. Calories per half-serving
- C. Added sodium
- D. Gluten content
Correct Answer: A
Rationale: New food labels are required to list added sugars to help consumers monitor intake and make healthier choices.
What foods will you teach the patient are high in iron?
- A. Vegetables
- B. Red meats
- C. Fruits
- D. Fish
- E. Poultry
- F. Grains
- G. Beans
Correct Answer: B,D,E,G
Rationale: Red meats, fish, poultry, and beans are rich in iron, providing heme (animal-based) and non-heme (plant-based) iron.
How can increasing the fiber intake in one's diet lead to a reduced caloric intake?
- A. Fiber promotes satiety, reducing overall food intake.
- B. Fiber binds to calories, preventing absorption.
- C. Fiber speeds up metabolism, burning more calories.
- D. Fiber replaces high-calorie foods in the diet.
Correct Answer: A
Rationale: Fiber increases feelings of fullness, leading to reduced food consumption and lower caloric intake.
Most absorption of nutrients occurs in the
- A. Duodenum and jejunum.
- B. Stomach.
- C. Ileum.
- D. Ascending colon.
Correct Answer: A
Rationale: The duodenum and jejunum have a large surface area due to villi, making them primary sites for nutrient absorption.