What is the chemical formula for glucose?

The chemical formula for glucose is C6H12O6. This formula indicates that a glucose molecule is made up of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Glucose is a simple sugar and is an essential source of energy for cells in the body. It plays a critical role in metabolism and is a primary carbohydrate involved in energy production.

The structure of glucose is crucial to its function in biological systems, as it can be further broken down via cellular respiration to release energy or can be stored as glycogen in the liver and muscles for future use. The correct molecular composition reflects how glucose is utilized as fuel by organisms.

In terms of the other options, they represent different compounds with variations in the number of hydrogen or oxygen atoms, which fundamentally change their properties and functions compared to glucose.