Question

Which of the following cells is round and biconcave?

• A. Neutrophil
• B. Osteocyte
• C. Erythrocyte
• D. Astrocyte

Hint:

Erythrocytes are uniquely round and biconcave, allowing for efficient oxygen transport and flexibility in blood circulation.

Answer 1

The Correct Option is C

Step 1: Identify the characteristics of erythrocytes.
Erythrocytes, or red blood cells, are round and biconcave in shape.
This biconcave shape allows them to have a large surface area for gas exchange (such as oxygen and carbon dioxide) and to pass through the small capillaries.
Step 2: Review of other cells.
Neutrophils: These are a type of white blood cell, and although they are round, they do not have a biconcave shape.
Osteocytes: These are bone cells that have a star-like shape, not a biconcave one.
Astrocytes: These are star-shaped glial cells in the brain and nervous system.

Thus, the correct answer is (C) Erythrocyte.