The Precursor Cell for All the Types of Blood Cells

Question

The precursor cell for all the types of blood cells is the:
A)stem cell
B)normoblast
C)megakaryocyte
D)reticulocyte

Accepted Answer

The stem cell, specifically the hematopoietic stem cell, is the precursor cell for all the types of blood cells. This cell has the ability to differentiate into erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (platelets). Normoblasts, megakaryocytes, and reticulocytes are all intermediate stages in the development of these blood cells, but they are not the precursor cell.