ATI LPN
Upper Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
In an autotrophic organism, substance B functions as a
Correct Answer: A
Rationale: In autotrophs (e.g., plants), substance B (likely glucose from photosynthesis diagrams) is a source of energy for cellular processes. It's not a hormone , vitamin , or vague biotic resource .
Question 2 of 5
If sodium bicarbonate (NaHCO3) is not released as part of the pancreatic juice, the pH of the
Correct Answer: D
Rationale: Sodium bicarbonate neutralizes acidic chyme in the small intestine; without it, the small intestine remains acidic, making D correct.
Question 3 of 5
Which of the following is an effect of gastric secretions on digestion?
Correct Answer: D
Rationale: Gastric secretions include pepsin, which breaks proteins into peptides, making D correct.
Question 4 of 5
Which of the following enzymes digest proteins?
Correct Answer: C
Rationale: Pepsin digests proteins in the stomach, making C correct.
Question 5 of 5
The presence of large numbers of mitochondria in the cells lining the small intestine allows it to
Correct Answer: C
Rationale: Mitochondria provide energy for active glucose absorption, making C correct.