Understanding Serial Dilutions

What is the primary purpose of performing a serial dilution in a laboratory setting?

• To change the color of a solution

• To gradually decrease the concentration of a solution

• To measure the temperature of a solution

• To increase the concentration of a solution

In a tenfold serial dilution, what is the dilution factor used?

• 2

• 5

• 20

• 10

How much stock solution is added to 9 ml of water to achieve a 1 to 10 dilution?

• 0.5 ml

• 1 ml

• 2 ml

• 5 ml

What is the final concentration when 1 ml of a 1 to 100 dilution is transferred to the next tube with 9 ml of water?

• 1 to 100

• 1 to 1000

• 1 to 10

• 1 to 10000

In a twofold serial dilution, how does the volume of the medium compare to the volume of the previous solution?

• It is ten times the volume

• It is the same volume

• It is half the volume

• It is double the volume