Which statement accurately lists the types of molecules in- food that can be used by cells as energy sources? Many molecules in food can be used as energy sources, including proteins, carbohydrates, and fats. Only carbohydrates (simple or complex) and fats can be used as energy source. Only carbohydrates (simple, or complex) can be used as energy sources. Only simple carbohydrates, such as glucose, can be used as energy sources.

Many molecules in food can be used as energy sources, including proteins, carbohydrates, and fats. Carbohydrates provide quick energy, while fats offer a more sustained energy source, and proteins can also be utilized albeit not primarily, making them essential in energy metabolism during prolonged fasting or intense exercise. When it comes to the energy conversion process, the body breaks down these macronutrients through various biochemical pathways. Carbohydrates are converted into glucose, fats into fatty acids, and proteins into amino acids. This versatility allows cells to adapt to energy needs based on dietary intake and activity levels, showcasing the flexibility of our metabolic engine!