About How Many Cells Constitute the Body of an Adult

Question

About how many cells constitute the body of an adult?
A)50 to 100 million
B)50 to 100 billion
C)50 to 100 trillion
D)50 to 100 quadrillion

Accepted Answer

The estimated number of cells in the human body is about 37.2 trillion, which falls within the range of 50 to 100 trillion. Therefore, the best choice is C. Option A is too low, B is too high, and D is an extremely high number that is not supported by scientific literature.