A 45-year-old male is diagnosed with pernicious anemia. The most likely cause of this condition is:
A) defective DNA synthesis.
B) abnormal synthesis of hemoglobin.
C) defective use of vitamin C.
D) blocked protein synthesis.

Question

Quizplus · Accepted Answer

Pernicious anemia is caused by a deficiency in vitamin B12, which is necessary for DNA synthesis. Without enough vitamin B12, the body cannot make enough red blood cells, leading to anemia.

A 45-Year-Old Male Is Diagnosed with Pernicious Anemia