Nokea
Our food mainly contains-
- A. Carbohydrates
- B. Cellulose
- C. Sucrose
- D. Glucose
Correct Answer: A
Rationale: Carbohydrates are the primary component of most diets.
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One of the following is not true about the enteroendocrine cells:
- A. They are present in the stomach, small intestine and large intestine.
- B. They are of two types open and closed.
- C. They deliver their secretions only in the git lumen.
- D. They are also called argentaffine cells
Correct Answer: C
Rationale: Enteroendocrine cells release hormones into the bloodstream (endocrine function), not just the GIT lumen.
Following a diagnosis of Zollinger-Ellison syndrome, a 70-year-old woman undergoes gastrectomy. Her physician informs her that she will require lifelong intramuscular vitamin B12 injections. Which specific type of cells' absence is responsible for the need for vitamin replacement?
- A. Chief cells
- B. G cells
- C. Goblet cells
- D. Parietal cells
Correct Answer: D
Rationale: Parietal cells produce intrinsic factor, necessary for vitamin B12 absorption; their absence after gastrectomy necessitates B12 injections.
Which of the following cells secrete pepsinogen?
- A. Parietal cells
- B. Alpha cells
- C. Chief cells
- D. Stem cells
Correct Answer: C
Rationale: Chief cells in the stomach are responsible for secreting pepsinogen, which is then activated to pepsin by the acidic environment created by HCl.
Which of the following substances is considered inorganic?
- A. minerals
- B. fats
- C. carbohydrates
- D. proteins
Correct Answer: A
Rationale: Minerals are inorganic substances, unlike fats, carbohydrates, and proteins, which are organic.
Match each term with the correct description: organs that filter blood to remove wastes collected from all cells
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: D
Rationale: The kidneys filter blood to remove cellular wastes.