CSSD Practice Exam 2026 – Complete Study Resource

The correct answer reflects the established absorption rate of glucose and fructose in the human digestive system. These sugars are absorbed through specific transport mechanisms in the small intestine, involving both passive and active transport processes.

The absorption rate of 1.8 grams per minute is well-supported by physiological studies that measure the uptake of these simple sugars in the intestine. They indicate that the transport of glucose and fructose is facilitated by the presence of sodium-dependent glucose transporters (SGLT1) and facilitated diffusion through GLUT transporters, which can efficiently handle this volume of sugar uptake when considering an array of conditions and concentrations.

Understanding this absorption rate is essential in the context of dietary intake and metabolic considerations, especially for individuals with conditions like diabetes or those on specific diets that affect sugar absorption. This knowledge helps in optimizing nutritional strategies and managing their impacts on health.