Question

Number of cells daily replaced in human body is

• A. $1\times {10}^9$
• B. $5\times {10}^9$
• C. $1\times {10}^{10}$
• D. $5\times {10}^{10}$

Answer 1

The correct option is B $5\times {10}^9$

All cells in our body have a particular life span after which they die and are replaced regularly with new cells the have the same chromosomal number with that cell being replaced. Therefore there are a large number of cells that are being regularly replaced in the human body it is $5\times {10}^9$.

So, the correct option is 'B'.