ATI RN
Vitamin Drugs Questions
Question 1 of 5
In isolated fibroblast or epithelial cells, retinoids enhance the synthesis of following protein
Correct Answer: A
Rationale: Retinoids specifically enhance fibronectin synthesis in fibroblasts and epithelial cells.
Question 2 of 5
Iron sorbitol-citric acid differs from iron dextran in that
Correct Answer: A
Rationale: Iron sorbitol-citric acid is for intramuscular use only, unlike iron dextran, which can be given IV.
Question 3 of 5
Which of the following is true about iron therapy?
Correct Answer: C
Rationale: Prophylactic iron is recommended during pregnancy due to increased demand; IM iron isn’t faster, and breastfed infants may need iron later.
Question 4 of 5
Concentrations of retinal in plasma in excess of $\mu \mathrm{g} / \mathrm{dl}$ usually are diagnostic of hypervitaminosis $A$
Correct Answer: C
Rationale: Plasma retinol levels >100 μg/dL indicate hypervitaminosis A, reflecting toxicity.
Question 5 of 5
Megaloblastic anaemia occurs in
Correct Answer: C
Rationale: Megaloblastic anemia results from deficiency of either vitamin B12 or folic acid, impairing DNA synthesis.