I asked wrong question about RBCs here is the correct question?

Question

I wanted to ask that Human RBC's are cells but they do not have nucleus so how do they function

Answer 1

From my previous answer I presume. Well, the simple fact that they do not have any nucleus limits them to a 3 month lifespan. A RBC is something like a transport vesicle. It transports oxygen because of the hemoglobin present, not because of the nucleus.

It is able to move around due to blood pressure created by the heart pumping blood to the rest of the body. It literally goes with the flow.

Answer 2

The nucleus contains DNA to code for proteins (via RNA). Therefore without the nucleus proteins cannot be manufactured. But this doesn't matter because the red blood cells already have all the proteins they need (manufactured before the nucleus got destroyed), and therefore can function quite happily without a nucleus for a while. I'm guessing the three month life span is because that's how long it takes for the damage to the proteins in the red blood cells to become significant, and as the proteins can't be remade due to the lack of nucleus the cells get destroyed.

Answer 3

None of a RBC's primary functions involve itself. The RBC is a slave to other cells but the only thing it has to do are static functions such as float around. It will automatically get O2 stuck to it's iron based hemoglobin and release it to myopin in muscle cells and other high affinity molecules.

Answer 4

At its initial stage, it has nucleus. i.e. When it is born, it has nucleus.But after thier growth the nucleus disappears.


RBC's have only affinity.its like a sponge absorbing water.likewise RBC's have great affinity towards oxygen.