ISSA Nutritionist Practice Exam 2025 – Comprehensive All-In-One Guide to Exam Mastery!

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Which nutrient is primarily known for being a major source of energy in foods?

Protein

Carbohydrates

Carbohydrates are primarily known for being a major source of energy in foods. They are organic compounds made up of carbon, hydrogen, and oxygen, and they come in various forms, such as sugars, starches, and fiber. The body metabolizes carbohydrates through a process called glycolysis, which breaks them down into glucose. Glucose is then used by the body's cells for energy, making carbohydrates the body's preferred fuel source, especially for high-intensity physical activity.

In contrast, protein serves multiple functions in the body, such as building and repairing tissues, but it is not the first choice for energy. Vitamins and minerals play critical roles in various biochemical processes and overall health, but they do not provide energy directly. Thus, carbohydrates are essential for providing the energy required for daily activities and physical exercise.

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Vitamins

Minerals

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