Question

Which anemia is caused due to Microcytic, hypochromic red blood cells?

• A. Pernicious anemia
• B. Aplastic anemia
• C. Iron deficiency anemia
• D. Hemolytic anemia

Hint:

Always associate microcytic, hypochromic RBCs with iron deficiency. It’s a classic feature asked frequently in GPAT’s Pharmacology and Pathophysiology sections.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Microcytic means the red blood cells are smaller than the normal range, and hypochromic means they carry less hemoglobin than normal, so they look pale. Together these two features point to a problem with hemoglobin production inside the cell.

Step 2: Key Formula or Approach:
Hemoglobin is built from heme and globin, and heme synthesis needs a steady supply of iron. If iron is not available, the body cannot make enough hemoglobin, and the red cell shrinks and stays pale as it forms. So the anemia to look for is one caused by low iron, not by low B12, marrow failure, or early cell destruction.

Step 3: Detailed Explanation:
Pernicious anemia is caused by low vitamin B12, which slows DNA making in the cell nucleus and leads to large cells, so it gives macrocytic anemia, the opposite of what is asked.
Aplastic anemia comes from bone marrow failure, so fewer cells are made overall, but the cells that are made are normal sized and normally filled with hemoglobin.
Hemolytic anemia is caused by faster breakdown of red cells, not by poor hemoglobin filling, so cell size and color usually stay normal.
Iron deficiency anemia directly reduces the iron available for heme, so hemoglobin production per cell drops, and this shrinks the cell and lightens its color, giving the microcytic, hypochromic picture in the question.

Step 4: Final Answer:
The anemia with microcytic, hypochromic red blood cells is iron deficiency anemia.