Answer to Question #92515 in Biochemistry for Dheepu Shree

Question #92515
Glucose is the major energy yielding nutrient for most cells. Assuming a cellular concentration of 1 mM, calculate how many molecules of glucose would be present in our hypothetical (& spherical) eukaryotic cell of size 50 micrometer.
Expert's answer

As hypothetical cell is spherical we can apply equation for the volume of sphere:

where d is diameter (size) of the cell.

Concentration of glucose in the cell is

where n is the amount of glucose in moles and V is the volume of cell.

Number of molecules is linked to the number of moles via Avogadro's number:

Combining together all three equations, we can find number of glucose molecules in the cell:

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