What is the term for "nutrients that our bodies need in relatively large amounts to support normal function and health"?
Micronutrients
Macronutrients
Organic molecules
Inorganic molecules
The Correct Answer is B
A. Micronutrients are nutrients that the body needs in small amounts, such as vitamins and trace minerals. While essential for health, they are required in much smaller quantities than macronutrients.
B. Macronutrients are nutrients that the body requires in relatively large amounts to provide energy and support growth, development, and overall physiological function. The main macronutrients include carbohydrates, proteins, fats (lipids), and water. These nutrients provide calories (except water) and are critical for cellular structure, energy metabolism, and maintaining homeostasis.
C. Organic molecules refer to chemical compounds that contain carbon and hydrogen, such as carbohydrates, proteins, fats, and vitamins. While some macronutrients are organic, the term does not specifically indicate the nutrient requirement in large amounts.
D. Inorganic molecules, such as minerals and water, do not contain carbon-hydrogen bonds. Some are macronutrients (like water) or micronutrients (like iron), but the term is too broad to specifically define nutrients needed in large amounts.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Disaccharides are carbohydrates composed of two sugar molecules linked together, such as sucrose (table sugar), lactose, and maltose. They are simpler than polysaccharides and provide quick energy but are not considered complex carbohydrates.
B. Monosaccharides are the simplest form of carbohydrates, consisting of a single sugar molecule such as glucose, fructose, or galactose. They are the building blocks of more complex carbohydrates but are not complex carbohydrates themselves.
C. Glycogen is a specific type of polysaccharide that serves as the body’s storage form of glucose in liver and muscle tissues. While glycogen is a complex carbohydrate, the term in the question refers to complex carbohydrates in general, not just the stored form.
D. Polysaccharides are complex carbohydrates composed of long chains of glucose units linked together. Examples include starch (found in plants), glycogen (stored in animals), and cellulose (a structural component in plants). Polysaccharides provide sustained energy as they are broken down more slowly than simple sugars and play roles in energy storage and structural support.
Correct Answer is B
Explanation
A. Four hours is longer than the recommended safe time for perishable foods to remain at temperatures where bacteria can grow. Even with cool weather, bacteria multiply rapidly in the “danger zone” (40°F–140°F).
B. Perishable foods, including cooked meats, salads with mayonnaise, eggs, and cut fruits, should not be left out at room temperature for more than 2 hours (or 1 hour if the ambient temperature is above 90°F). Keeping foods on ice helps slow bacterial growth, but 2 hours is the generally accepted limit to prevent foodborne illness. After this period, foods should be discarded to ensure safety.
C. Thirty minutes is unnecessarily conservative for most outdoor temperatures. While shorter exposure is safer, perishable foods can remain safe for up to 2 hours under controlled conditions with ice.
D. Six hours far exceeds the safe limit. Perishable foods left out this long, even on ice, are at high risk for bacterial contamination and could cause foodborne illness.
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