PATHOLOGY

Detailed explanation-1: -Red blood cells do not have a nucleus on maturity. WBCs are characterized by the presence of a large central nucleus. Due to the presence of haemoglobin, these cells appear red in colour. These cells are colourless, as they do not have any pigment.

Detailed explanation-2: -Blood cells. Blood contains many types of cells: white blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages), red blood cells (erythrocytes), and platelets. Blood circulates through the body in the arteries and veins.

Detailed explanation-3: -Explanation: In terms of function: Red blood cells carry oxygen around the body for respiration to take place while white blood cells defend the body from infections and viruses.

Detailed explanation-4: -Types of white blood cells are granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes (T cells and B cells).

Detailed explanation-5: -With a lifespan of roughly 120 days, red blood cells are uniquely shaped as biconcave discs that do not contain nuclei. This glaring omission from its cellular structure allows for the oxygen-carrying protein, hemoglobin, to be transported within red blood cells.