The cvolume of certain bacterial cell is 2.56 μm3. (a) What is its volume in cubic millimeters (mm3)? (b) What is the volume of 105 cells in liters (L)?

Respuesta :

Answer:

For a: The volume of bacterial cell in cubic mili meters is [tex]2.56\times 10^{-9}mm^3[/tex]

For b: The volume of 105 cells is [tex]2.668\times 10^{-13}L[/tex]

Explanation:

  • For a:

We are given:

Volume of 1 bacterial cell = [tex]2.56\mu m^3[/tex]

To convert it into cubic mili meters, we use the conversion factor:

[tex]1\mu m^3=10^{-9}mm^3[/tex]

Converting the given volume into cubic milimeters, we get:

[tex]\Rightarrow 2.56\mu m^3\times (\frac{10^{-9}mm^3}{1\mu m^3})=2.56\times 10^{-9}mm^3[/tex]

Hence, the volume of bacterial cell in cubic mili meters is [tex]2.56\times 10^{-9}mm^3[/tex]

  • For b:

To convert it into liters, we use the conversion factor:

[tex]1\mu m^3=10^{-15}L[/tex]

Converting the given volume into cubic milimeters, we get:

[tex]\Rightarrow 2.56\mu m^3\times (\frac{10^{-15}L}{1\mu m^3})=2.56\times 10^{-15}L[/tex]

This volume is the volume of 1 cell.

To calculate the volume of 105 cells, we apply unitary method:

1 cell occupies a volume of [tex]2.56\times 10^{-15}L[/tex]

So, 105 cells will occupy a volume of [tex]105\times 2.56\times 10^{-15}=2.668\times 10^{-13}L[/tex]

Hence, the volume of 105 cells is [tex]2.668\times 10^{-13}L[/tex]