A nurse is assisting with teaching a class about minerals. Which of the following minerals is needed for the transport of oxygen?
Iron
Magnesium
Potassium
Phosphorus
The Correct Answer is A
A. Iron is a crucial component of hemoglobin in red blood cells, responsible for carrying oxygen throughout the body.
B. Magnesium is involved in various enzymatic reactions, nerve function, and muscle contractions, but it's not directly involved in oxygen transport.
C. Potassium plays a role in maintaining electrolyte balance and cell function, not in oxygen transport.
D. Phosphorus is essential for bone health, energy metabolism, and cell membrane formation but is not directly involved in oxygen transport.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A chocolate-covered ice cream bar is high in sugar and fat, lacking in nutritional value.
B. Popcorn and a juice box can be acceptable, but popcorn might not be suitable for younger children due to choking hazards, and juice boxes are often high in sugar.
C. Peanut butter on apple combines protein from peanut butter with vitamins and fiber from the apple, making it a healthier and more balanced snack choice.
D. Cookies and milk provide sugar and fat without many essential nutrients, not an ideal snack for everyday consumption.
Correct Answer is A
Explanation
A. Fats, specifically dietary fat, aid in the absorption of fat-soluble vitamins (such as vitamins A, D, E, and K), which require dietary fat for proper absorption.
B. Nerve cell transmission regulation is associated with electrolytes and neurotransmitters, not fats.
C. Carbohydrates are the primary macronutrient that converts to sugar (glucose) for energy; fats primarily provide energy through long-term storage.
D. Protein is the nutrient primarily responsible for building and repairing tissues, while fats have other essential functions.
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