A 45-year-old morbidly obese woman has been attempting to lose weight using a low- carbohydrate diet. After 2 months of little success, she confides in her son that she does add glucose to her coffee in the morning and after dinner but feels only some of this will be absorbed and should not be the cause of her limited success. Her son, a medical student, states that glucose is almost completely absorbed from the gut. What type of transport does glucose utilize for gastro intestinal absorption?
A. Active- Carrier mediated, against the concentration gradient and energy dependent
B. Facilitated- Carrier mediated, down the concentration gradient
C. Passive- Down the concentration gradient
D. Active and facilitated
E. Passive and facilitated
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