Question

Red Blood Cells are known as
A) Erythrocytes
B) Leukocytes
C) Neurocytes
D) Oxycytes

Answer 1

Hint: Erythrocyte is a cell that comprises haemoglobin. It carries oxygen to the body. It is typically a biconcave disc without a nucleus.

Complete Answer:
The red blood cell is included in a thin membrane. The membrane is composed of chemically complex lipids, proteins, and carbohydrates. Red cells get generated continuously in the bone marrow by different stages. This process is called erythropoiesis.
The blood is red due to haemoglobin. Red blood cells cannot cut or replicate like other body cells. They cannot individually manufacture proteins. The shape of the erythrocytes looks concave. This shape increases the cell's surface area. It helps with the diffusion of oxygen and carbon dioxide.
A cytoskeleton composed of several proteins helps to maintain the concave shape. Erythrocytes are very adaptable and adjust shape when flowing through capillaries. Immature erythrocytes are known as reticulocytes. They account for 1-2 percent of red cells in the blood. They help to transport oxygen and carbon dioxide between the lungs and tissues. In each individual, the number of red cells and the amount of haemoglobin varies under different conditions.
The colourless cell which circulates in the blood and body fluids is known as Leukocytes. It is involved in counteracting foreign substances and diseases. It is also known as a white blood cell.

The correct option is A Erythrocytes.

Note: Since RBCs are concave-shaped, it can bend and flow smoothly through the body’s capillaries. Since RBC lacks a nucleus, DNA, and organelles like the endoplasmic reticulum or mitochondria, they are considered as cells. Each human red blood cell contains approximately 270 million haemoglobin.