Final answer:
The reference quantity of food in a database is typically given per serving size.
Step-by-step explanation:
The reference quantity of food in a nutrition database is commonly expressed per serving size. This serving size represents the recommended amount for obtaining the listed nutrients. For instance, a nutrition label might indicate 5 grams of total fat in one serving. Serving sizes can vary among different food items, making it crucial to pay attention to accurately track nutrient and calorie intake. Understanding serving sizes is essential for making informed dietary choices and maintaining a balanced diet. By adhering to recommended portions, individuals can manage their nutritional intake effectively, supporting overall health and wellness. It enables consumers to interpret food labels and make healthier eating decisions.