Which part of the digestive system has the most effect on carbohydrates digestion and absorption?
Mouth
Transverse colon
Duodenum
Stomach
The Correct Answer is C
A. Mouth
Carbohydrate digestion begins here via salivary amylase, but it's minimal and not the main site of absorption.
B. Transverse colon
By this point, most carbs are already absorbed. The colon mainly absorbs water and electrolytes.
C. Duodenum
The duodenum, part of the small intestine, is where pancreatic amylase continues carbohydrate digestion, and absorption of monosaccharides begins.
D. Stomach
The acidic environment inactivates salivary amylase; little to no carb digestion occurs here.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. "I will select a cup of white rice for my starch."
White rice is a refined grain with very low fiber.
B. "I should choose 1 ounce of almonds when I am hungry midday."
Almonds do contain fiber but in small quantities per ounce; not the best single choice for a high-fiber goal.
C. "One cup of apple sauce would be a good snack option."
Applesauce is lower in fiber than whole apples and can contain added sugars.
D. “My breakfast choice is a cup of all bran cereal.”
Bran cereals are very high in dietary fiber and are an excellent option for managing constipation.
Correct Answer is A
Explanation
A. Fructose
Fructose is the natural sugar found in fruits and honey.
B. Sucrose
Sucrose is a disaccharide composed of glucose and fructose, not a monosaccharide.
C. Glucose
While glucose is also found in some foods, fructose is the primary sugar in fruits and honey.
D. Galactose
Galactose is found in dairy products, not in fruits or honey.
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