GI System MCAT Practice Questions
14 board-style MCAT questions in Biological & Biochemical Foundations (B/B). Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- MCAT · medium1. A 12-year-old girl is brought to the physician because of a 2-hour history of severe epigastric pain, nausea, and vomiting. Her father has a history of similar episodes of abdom…
- MCAT · medium2. A clinical study examines patients with loss-of-function mutations in the SGLT1 transporter, which normally co-transports sodium and glucose in small intestinal enterocytes. Aff…
- MCAT · medium3. A 58-year-old woman undergoes laparoscopic cholecystectomy for symptomatic cholelithiasis. Two weeks postoperatively, she develops chronic diarrhea with fatty, foul-smelling sto…
- MCAT · medium4. A 58-year-old man presents with chronic epigastric pain and early satiety. Upper endoscopy reveals chronic gastritis with reduced gastric acid production. A research team invest…
- MCAT · medium5. A 42-year-old man with a 10-year history of Crohn's disease presents with progressive fatigue and diarrhea. He underwent resection of 50 cm of terminal ileum 6 months ago for re…
- MCAT · medium6. A 3-year-old boy from a rural area with limited sanitation presents with acute-onset watery diarrhea, fever, and poor weight gain for 2 weeks following weaning from breast milk.…
- MCAT · medium7. A 58-year-old man with hypertension has been taking furosemide 40 mg daily for 3 months. Laboratory studies show serum potassium of 2.9 mEq/L, serum sodium of 138 mEq/L, and ser…
- MCAT · medium8. A 58-year-old man with a 15-year history of H. pylori infection presents with chronic epigastric pain and early satiety. Endoscopy reveals chronic atrophic gastritis with intest…
- MCAT · medium9. A 45-year-old man presents to the emergency department with acute right upper quadrant pain and fever. He reports the pain began 2 hours after eating a fatty meal. Laboratory st…
- MCAT · medium10. A 34-year-old woman with a 6-year history of ulcerative colitis presents with a 3-week history of worsening diarrhea (8-10 stools daily) despite optimization of her mesalamine t…
- MCAT · medium11. A 68-year-old woman presents with progressive fatigue, paresthesias, and macrocytic anemia. Laboratory studies show a hemoglobin of 8.2 g/dL, MCV of 108 fL, and a serum B12 leve…
- MCAT · medium12. A 28-year-old woman presents with a 6-month history of chronic diarrhea, abdominal bloating, and progressive weight loss despite adequate oral intake. She reports fatigue and nu…
- MCAT · medium13. A 42-year-old man presents with a 6-month history of severe epigastric pain, recurrent peptic ulcers refractory to standard PPI therapy, and chronic watery diarrhea. Upper endos…
- MCAT · medium14. A 52-year-old man with a 15-year history of alcohol use disorder presents with chronic abdominal pain, steatorrhea, and weight loss. Laboratory studies show elevated fecal fat (…