What's the basic unit of life in all living things?

Now the basis of life is cell phones...at least for some. Lol

Unlike the rest of the cells in your body, your red blood cells lack nuclei.Other vertebrates such as fish, reptiles, and birds, have red cells that contain nuclei that are inactive. Losing the nucleus enables the red blood cell to contain more oxygen-carrying hemoglobin, thus enabling more oxygen to be transported in the blood and boosting our metabolism. Source:Whitehead Institute for Biomedical Research 2008

Buddiedog126, Actually, human red blood cells do not have a nucleus.

It's truly amazing how many different life forms there are.

"Mature" red blood cells, also called erythrocytes, do not have a nucleus. However, immature red blood cells DO have a nucleus. They are removed before the cells are "kicked out of the bone marrow" and released into the bloodstream. Seeing nucleated red blood cells (metarubricytes) in a blood test is usually a sign of severe anemia and/or disease.

Gary, Oh yes!