why is rbc eukaryotic even though it has no nucleus? pls ans in little detail as i hv 2 prepare assignment?

Answer 1

Well, they are individual component cells of a eukaryotic organism.

They are actually generated as progenitor cells called erythroblasts that DO have a nucleus. These cells have ribosomes and they produce very large amounts of hemoglobin so that the red blood cell can fulfil its future function.

During its maturation the erythroblast in the bone marrow shrinks and eventually it will extrude and get rid of its nucleus. This happens at about the same time as it leaves the bone marrow. However, although it no longer has a nucleus it is essentially the same cell that once DID have a nucleus. It therefore is eukaryotic.

Prokaryotes aren't just defined on the presence or absence of a nucleus. They also have cotranscriptional translation on their main chromosomes. This means that as the DNA is transcribed the mRNA transcript is translated at the same time. This doesn't happen in a red blood cell, so it could never be a prokaryote.

Answer 2

RBCs are exceptions to the general eukrayote rule because they are so specialized to produce hemoglobin that they have very few organelles, except ribosomes (which prokaryotes also have).
A prokaryotic cells does not have membrane bound organelles, that includes but isnot limited to the nucleus.
However, RBCs have the other characteristics of eukaryotes, including larger size and ribosomes that are 80s (instead of 70s)

Answer 3

RBC's are eukaryotic because of their oxygen part.