In animals, glucose is absorbed from the gut into intestinal cells against its concentration of gradient. This one-way process r
equires energy to work. Which of the following best describes how glucose is absorbed into intestinal cells? A. By osmosis
B. By diffusion
C. By a buffer
D. By active transport
Monosaccharides are the simplest carbohydrates. Although glucose and fructose have the same molecular formula they have different structures or the atoms are arranged differently from each other and this is evident in the way they react, behave and in their properties.