Question

The diameter of RBC is
A. 10.3 um
B. 9.2 um
C. 7.2 um
D. 8.1 um

Answer 1

Hint: RBCs are known as red blood cells that are present in all vertebrates for the purpose of oxygen delivery inside the body. It is one of the most common types of cell that present on living organisms.

Complete Answer:
- Red blood cells are working to supply an adequate amount of oxygen to the whole body parts it completes its function along with the coordination of the respiratory system, that can be lungs or gills.
- It carries oxygen from the lungs or gills and transports it to the whole body.
- It has a special component inside it to complete it’s function of oxygen transport that component is known as haemoglobin. It is present in the cytoplasm of the cell in a certain amount and it is rich in iron.
- This haemoglobin binds with the oxygen and transport it where it is required, this is responsible for the red colour of the blood.
- A normal red blood cell is disk shaped convex in shape, due to some deformity the shape of the red blood cell will change and convert into a sickle like shape.
- The approx the diameter of the disk is 6.2 to 8.2 um. It is smaller than most of the cells that present in the human body.
So from the above information of the Red blood cell we can say that the diameter of the red blood cell is 7.2 um.

Hence the correct answer is option C is correct.

Note: Red blood cell is one of the most important components of blood. In sickle cell anaemia the shape of the red blood cell will become sickle like.