MICROANATOMY

Detailed explanation-1: -As red blood cells contain no nucleus, protein biosynthesis is currently assumed to be absent in these cells.

Detailed explanation-2: -Unlike most other eukaryotic cells, mature red blood cells don’t have nuclei. When they enter the bloodstream for the first time, they eject their nuclei and organelles, so they can carry more hemoglobin, and thus, more oxygen. Each red blood cell has a life span of around 100–120 days.

Detailed explanation-3: -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. In mammals, red blood cells get rid of their nucleus as they mature to enhance their efficiency in oxygen transportation.