Erythropoiesis. The process through which new red blood cells are created; it begins in the bone marrow. Mentioned in: Porphyrias. the formation of red blood cells (erythrocytes) from stem cells in the bone marrow.
2 Unicelluar organisms are one-celled organisms or microorganisms. Although they are living things that are only one cell, they still need to carry out all 6 characteristics of life. For example, they must feed, digest, excrete wastes and reproduce. They are very small and surround you every day by the millions.
Unicellular organisms. A unicellular organism is a living thing that is just one cell. There are different types of unicellular organism, including: 1  bacteria. 2  protozoa.3  unicellular fungi.rotozoa are unicellular organisms that live in water or in damp places. The amoeba is an example of one. Although it is just one cell, it has adaptations that let it behave a bit like an animal: 1  it produces pseudopodia (âfalse feetâ) that let it move about. 2  its pseudopodia can surround food and take it inside the cell.