Which nutrient is primarily associated with providing energy?

Alberta Grade 9 Science Test: Master your knowledge with our comprehensive practice resources. Featuring engaging flashcards and detailed multiple-choice questions with explanations, get ready to succeed!

Multiple Choice

Which nutrient is primarily associated with providing energy?

Explanation:
Carbohydrates are the body's main source of energy because they are quickly broken down into glucose, the fuel that powers most cells through cellular respiration to produce ATP. This makes them especially useful for immediate energy needs, such as during activity or brain function. Fats provide a large amount of energy but are used mainly for long-term storage and endurance, while proteins are prioritized for growth and repair and only tapped for energy when other fuels are scarce. Vitamins, on the other hand, do not supply energy.

Carbohydrates are the body's main source of energy because they are quickly broken down into glucose, the fuel that powers most cells through cellular respiration to produce ATP. This makes them especially useful for immediate energy needs, such as during activity or brain function. Fats provide a large amount of energy but are used mainly for long-term storage and endurance, while proteins are prioritized for growth and repair and only tapped for energy when other fuels are scarce. Vitamins, on the other hand, do not supply energy.

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