MICROANATOMY

Detailed explanation-1: -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. Scientists have struggled to understand the mechanism by which maturing red blood cells eject their nuclei.

Detailed explanation-2: -To mitigate oxidative stress and oxygen consumption, mature RBCs lose mitochondria and strengthen their antioxidant systems to specifically maintain haemoglobin iron in a reduced state, even in the presence of high oxygen concentrations.

Detailed explanation-3: -A single nucleus can be found in most eukaryotic cells. However, some cells go through a process called enucleation in which their nuclei are eliminated when they reach maturity. Red blood cells from mammals and vascular plant’s sieve tube cells have nuclei in their early stages, but they lose them as they mature.

Detailed explanation-4: -The nucleus is only found in white blood cells in mammals. In other vertebrates, the nucleus is present in the red blood cells, white blood cells, and platelets.

Detailed explanation-5: -A red blood cell loses its nucleus as it matures. When the cell is close to maturity, it creates a ring structure of actin filaments, using some specialized proteins. This ring contracts and closes off the portion of the cell that contains the nucleus and DNA.