Certified Dietary Manager (CDM) 2025 – 400 Free Practice Questions to Pass the Exam

Macro-nutrients are primarily known for providing energy through carbohydrates, proteins, and fats. These components serve as the body's primary sources of energy, which is essential for performing daily activities and maintaining physiological functions.

Carbohydrates are the body's quickest source of energy and play a critical role in maintaining blood glucose levels during physical activity. Proteins, while primarily known for building and repairing tissues, also serve as an energy source when carbohydrates are limited. Fats provide a concentrated form of energy and are crucial for absorbing fat-soluble vitamins and supporting cell structure.

Other options, such as providing essential vitamins, regulating body temperature, and supporting immune function, are important aspects of overall health but are not the primary function of macro-nutrients. Vitamins are classified as micronutrients and, while they support various body functions, they do not provide energy. Likewise, regulating body temperature and supporting immune function involves other bodily systems and micronutrients, not primarily macro-nutrients.