How RBCs without nucleus can carry out their normal functions?

Answer 1

No RBCs have nuclei - this does not stop them from functioning, it just means that they cannot reproduce themselves, and so new RBC need to be continually manufactured instead of being able to replicate themselves.

Answer 2

Yes, as long as the cell doesn't need to produce new proteins for an important biological function. Take a look at the scientific literature. I'm sure there are examples of cells that have been kept alive, but cleaved of their nuclear material. As long as the environment continues to send signals, the cell will function to the best of it's ability, possibly for weeks or longer.

Answer 3

RBC's have a very short life span (about 120 days) before they are re-purposed by the liver. They are able to survive without organelles because their function or purpose is very limited. They only need to exist and allow oxygen to catch a ride with them.

The fact that they carry oxygen actually necessitates that they have very little functionality. If they carried out many processes, then the rbc's would use the oxygen that it was carrying instead of delivering it to other parts of the body.

For this reason RBC's do not have mitochondria, but rather use only glycolysis for obtaining energy (ATP), which is about 30X less efficient than using oxygen to create energy in a mitochondria.

Answer 4

Red blood cells are able to carry out their normal functions without a nucleus because their main role is to transport oxygen. Being without a nucleus allows more space for hemoglobin, the protein that binds oxygen. Additionally, lacking a nucleus helps RBCs maintain their biconcave shape, which facilitates their movement through capillaries to deliver oxygen efficiently.

Answer 5

Human RBC's don't have nuclei, at least not the mature ones. This enables them to devote all of their time to move oxygen and carbon dioxide around the cells in human body..