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 C
Explanation
A. Cheddar cheese
High in fat and protein, which take longer to digest and are not quick energy sources.
B. Grilled chicken breast
High in protein, which is not used quickly for energy unless carbs and fats are unavailable.
C. Banana
Bananas are rich in simple carbohydrates, especially glucose and fructose, which provide immediate energy.
D. Olive oil
A fat source, digested slowly and not used for quick energy.
Correct Answer is D
Explanation
A. Brown rice
This is a high-carb food, even though it’s a whole grain.
B. Whole wheat bread
Bread, whole grain or not, is a source of carbohydrates.
C. Apple
Apples contain natural sugars and are moderate in carbohydrates.
D. Grilled chicken breast
Chicken is a protein source and contains virtually no carbohydrates.
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