Question

Which of the following kinds of cells in the human blood have the longest life span?

• A. Basophil
• B. Erythrocyte
• C. Neutrophil
• D. Platelets

Answer 1

The Correct Option is B

To determine which type of cell in human blood has the longest lifespan, we need to consider the lifespan of different types of blood cells:

1. Basophil: Basophils are a type of white blood cell that generally have a short lifespan, typically around a few days.
2. Erythrocyte: These are red blood cells that transport oxygen from the lungs to the rest of the body. They have a relatively long lifespan of about 120 days.
3. Neutrophil: Neutrophils are another type of white blood cell and have a short lifespan, generally ranging from a few hours to a few days.
4. Platelets: Also known as thrombocytes, platelets are cell fragments involved in blood clotting. They have a lifespan of approximately 7 to 10 days.

Considering the above information, Erythrocytes have the longest lifespan among the types of cells listed, with a lifespan of around 120 days.

Therefore, the correct answer is Erythrocyte.