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WorksheetsBiotechnology 3.2 HW
Total questions: 13
Worksheet time: 7mins
Which of the following is NOT a type of balance used to measure the mass of a solute?
Tabletop/portable balance
Analytical balance
Electronic balance
Displacement balance
What is the standard unit of mass in the biotechnology lab?
Kilogram (kg)
Gram (g)
Milligram (mg)
Microgram (µg)
What is the term for a substance that is dissolved in water to form a solution?
Solvent
Solute
Aqueous
Balance
What is the term for a solution in which one or more substances are dissolved in another substance?
Solvent
Solute
Aqueous
Solution
What is the substance that dissolves the solute called?
Solvent
Solute
Solution
Suspension
What type of water is recommended for laboratory solutions to avoid impurities?
Tap water
Deionized water or distilled water
Spring water
Mineral water
What is the term used to describe the amount of solute added to a solvent?
Solubility
Concentration
Dilution
Saturation
What should be used to rinse glassware after washing with laboratory soap?
Tap water
Ethanol
Deionized water or distilled water
Chloroform
What is the common unit for measuring mass/volume concentration in biotechnology labs?
g/L
% (percent)
M (molarity)
μM (micromolarity)
Which of the following is an example of a solution measured in % (percent) concentration?
2 g/L albumin solution
10% NaOH solution
1 M NaCl
50 mM Tris buffer
What does molarity (M) measure in biotechnology labs?
The mass of solute in a given volume of solution
The percent concentration of a solution
The number of moles of solute in a liter of solution
The pH of a solution
Which of the following is NOT a common expression of concentration in biotechnology labs?
mass/volume
% mass/volume
molarity
density
What is the purpose of adjusting the pH of solutions in biotechnology labs?
To increase the temperature of the solution
To ensure solutions are appropriate for the biomolecules they contain
To change the color of the solution
To measure the concentration of solutes
