The chemical and mechanical digestion of carbohydrates begins in which part of the digestion system?
Stomach
Duodenum
Ascending colon
Mouth
The Correct Answer is D
A. Stomach
Some protein digestion occurs here, but carbohydrate digestion is minimal due to acidic pH inhibiting salivary enzymes.
B. Duodenum
Enzymatic digestion continues here, but it does not begin in the duodenum.
C. Ascending colon
No digestion happens here-only water and electrolyte absorption.
D. Mouth
Salivary amylase begins chemical digestion of carbohydrates, while chewing provides mechanical digestion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
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.
Correct Answer is B
Explanation
A. Raw carrots and celery
These are vegetables, not grains.
B. Chocolate chip cookies and saltine crackers
These are made from refined white flour, which lacks fiber and some nutrients removed during processing.
C. Popcorn and steel-cut oats
These are whole grains that retain fiber and nutrients.
D. Parmesan cheese and cantaloupe
Cheese is dairy; cantaloupe is fruit—neither are grains.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.