Characteristics of Monosaccharides

Carbohydrates are a major class of biomolecules that play crucial roles in energy storage and structural integrity in living organisms. They are composed of carbon, hydrogen, and oxygen, and often found in forms such as sugars and starches. The simplest form of carbohydrates is monosaccharides, which can build up to form oligosaccharides and polysaccharides. Understanding their structure is essential for comprehending their function in biological systems.

Which of the following statements accurately describes a characteristic of monosaccharides?