Which nutrient provides quick energy but lasts for a short time?

Which nutrient provides quick energy but lasts for a short time?

• A. Fat
• B. Carbohydrates
• C. Protein
• D. Fiber

Answer: (B)

Carbohydrates are the body's go‑to fuel for quick energy. They’re quickly broken down into glucose, which cells use right away for energy, especially during short bursts of activity or high-speed exercise. Because this fuel is readily available but stores can be limited, the energy spike tends to be brief unless you keep replenishing with more carbohydrates. Fats, while providing a steadier, longer-lasting energy source, take longer to break down. Proteins are primarily for tissue repair and only added as a secondary energy source, and fiber isn’t digested into usable energy in the short term. So the nutrient that gives quick energy but doesn’t last long is carbohydrates.

Carbohydrates are the body's go‑to fuel for quick energy. They’re quickly broken down into glucose, which cells use right away for energy, especially during short bursts of activity or high-speed exercise. Because this fuel is readily available but stores can be limited, the energy spike tends to be brief unless you keep replenishing with more carbohydrates. Fats, while providing a steadier, longer-lasting energy source, take longer to break down. Proteins are primarily for tissue repair and only added as a secondary energy source, and fiber isn’t digested into usable energy in the short term. So the nutrient that gives quick energy but doesn’t last long is carbohydrates.