Biochemistry Quiz

What is the purpose of a pipet in a laboratory?

• To transfer liquids

• To weigh chemicals

• To clean glassware

• To measure temperature

What does TC stand for in the context of pipets?

• Total Calculation

• Total Control

• Total Concentration

• Total Capacity

What is the difference between a TC and TD pipet?

• The shape of the pipet tip

• The amount of liquid dispensed

• The color of the pipet

• The material they are made of

What is the purpose of a Mohr pipet?

• To dispense liquids quickly

• To measure large volumes

• To measure without graduations to the tip

• To measure small volumes

What is the advantage of using automatic pipets in a laboratory?

• Increased precision

• Decreased stability

• More cleaning required

• Less safety

What is the unit of measurement for molarity?

• Moles per milliliter

• Milliequivalents per liter

• Grams per milliliter

• Moles per liter

What is the equivalent weight of a substance equal to?

• Atomic weight

• Molecular weight

• Combining weight

• Valence

What is the purpose of a serial dilution?

• To decrease the dilution factor

• To minimize the volume of concentrate

• To increase concentration

• To measure a titer

What is the dilution factor needed to make a 100 mEq/L sodium solution from a 3,000 mEq/L stock solution?

• 1/50

• 1/30

• 1/10

• 1/100

What is the total volume for each dilution in a serial dilution if the least common denominator for the dilution factors is 2?

• 1 mL

• 3 mL

• 2 mL

• 4 mL