Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. How many cells do you expect will be in this 20 microliters drop you placed under the microscope?
To calculate the number of cells in a given volume, you need to know the cell density and the volume of the sample. In this case, the cell density is given as 10^8 cells/mL, and the volume of the sample is 20 microliters.
To find the number of cells in this 20 microliters drop, follow these steps:
Step 1: Convert the volume from microliters to milliliters.
20 microliters = 20/1000 = 0.02 milliliters
Step 2: Calculate the number of cells using the cell density and volume.
Number of cells = cell density x volume
Number of cells = (10^8 cells/mL) x (0.02 mL)
Step 3: Multiply the cell density by the volume.
Number of cells = 10^8 x 0.02
Step 4: Solve the mathematical expression.
Number of cells = 2 x 10^6
Therefore, you would expect approximately 2 million cells in the 20 microliters drop you placed under the microscope.
To calculate the number of cells in a 20 microliter drop of a cell culture with a density of 10^8 cells/mL, you can use the following steps:
Step 1: Convert the volume given from microliters to liters.
20 microliters = 20 × 10^(-6) liters = 2 × 10^(-5) liters.
Step 2: Multiply the volume by the density to find the number of cells.
Number of cells = Volume (liters) × Density (cells/mL) = 2 × 10^(-5) liters × 10^8 cells/mL = 2 × 10^3 cells.
Therefore, there would be 2 × 10^3 cells in the 20 microliter drop you placed under the microscope.