Question

One cubic millimeter (mm^3 ) of blood contains 7.0 x 10^6 red blood cells. How many red blood cells are in 1.0 L of blood? Recall that 1 mL = 1 cm^3 . 7.0 × 10^12 red blood cells7.0 × 10^18 red blood cells7.0 × 10^9 red blood cells7.0 × 10^7 red blood cells

Answer 1

We know that 1 mL = 1 cm^3. Also, 1 mm^3 is equivalent to 1x10^-6.

Having said that, we can find the number of red blood cells in 1 liter.

`1L*\frac{7*10^6\text{cells}}{1*10^(-6)L}=7*10^(6+6)=7*10^(12)`

Hence, the answer is the first option.