For young adulthood ages nineteen to thirty, what is the AMDR for carbohydrates as a percentage of daily calories?
None of the above
10 to 35 percent
45 to 65 percent
20 to 35 percent
The Correct Answer is C
A. “None of the above” is incorrect because the correct range for carbohydrate intake is listed among the options.
B. The range of 10 to 35 percent corresponds to protein intake, not carbohydrates.
C. The Acceptable Macronutrient Distribution Range (AMDR) for carbohydrates for young adults (ages 19 to 30) is 45 to 65 percent of total daily calories. This range ensures adequate energy for daily activities, supports proper brain function, and provides dietary fiber for digestive health. Carbohydrates are the body’s primary energy source, and maintaining intake within this range helps prevent both nutrient deficiencies and excessive weight gain.
D. The range of 20 to 35 percent corresponds to fat intake, not carbohydrates.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While iron plays a role in certain enzymatic reactions in the body, its primary function is not directly related to nervous system function. Nervous system health depends on other nutrients like B vitamins, particularly B12.
B. Iron is essential for oxygen transport in the body. It is a key component of hemoglobin in red blood cells and myoglobin in muscle cells. Hemoglobin binds oxygen in the lungs and carries it to tissues throughout the body, while myoglobin stores and delivers oxygen within muscle cells, supporting energy production during physical activity. Adequate iron is critical for endurance, performance, and preventing fatigue. Iron deficiency can lead to anemia, decreased oxygen-carrying capacity, and impaired physical performance.
C. Iron is not directly used to generate energy from carbohydrates. Carbohydrates are metabolized via glycolysis and the Krebs cycle to produce ATP, but iron’s role is indirect, mainly as a component of hemoglobin and iron-containing enzymes that support oxidative metabolism.
D. While iron deficiency can indirectly affect blood oxygenation and overall cardiovascular function, iron does not directly maintain blood volume or blood pressure. Blood volume is regulated by water balance and electrolytes, while blood pressure depends on vascular resistance, cardiac output, and fluid status.
Correct Answer is A
Explanation
A. The “danger zone” for bacterial growth is between 40°F and 140°F (4°C–60°C). Within this temperature range, bacteria such as Salmonella, E. coli, and Listeria can multiply rapidly, increasing the risk of foodborne illness. Foods should be kept below 40°F in refrigeration or above 140°F during cooking or holding to prevent bacterial proliferation.
B. 35°F–155°F is slightly outside the standard danger zone range. Temperatures below 40°F are generally safe, and 155°F exceeds the threshold where most bacteria are destroyed.
C. 30°F–130°F is too low and does not accurately reflect the range in which bacteria multiply rapidly. Foods at 30°F are generally frozen or safe from bacterial growth.
D. 50°F–150°F does not reflect the standardized danger zone. Bacterial growth can occur at lower temperatures, starting around 40°F, and most pathogens are destroyed above 140°F.
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