Which statement best describes glucose usage?

Glucose is a critical carbohydrate and serves as a primary energy source for the body. The statement that it can be burned as fuel or stored for later use accurately reflects its versatile role in metabolism. When glucose is available, it can be used immediately by cells through processes like glycolysis to produce energy (ATP).

Additionally, when there is an excess of glucose, it does not just get wasted; instead, the body has mechanisms to store it for future energy needs. This is primarily done by converting glucose into glycogen through a process called glycogenesis, which takes place in the liver and muscle cells. When glycogen stores are full, additional glucose can be converted into fat through lipogenesis for long-term energy storage.

Thus, the correct choice highlights both immediate energy production and the ability to maintain energy reserves, showcasing the dual functions of glucose in the body's metabolic processes. This adaptability is crucial for maintaining energy balance and ensuring that the body has fuel available when needed.