AMT MLS Exam Verified Questions & Detailed
Answers | Medical Laboratory Scientist
Certification Prep | Guaranteed A+ Stuvia
Study Guide (Latest Updated Test Bank)
1. What are Class B fire extinguishers used for?
a. Ordinary combustibles
b. Flammable liquids (gasoline, oil, paint)
c. Electrical equipment
d. Combustible metals
Explanation: Class B extinguishers are designed for liquid fires that can flow.
2. Which type of fire extinguisher should be used for a fire involving energized
electrical equipment?
a. Class A
b. Class B
c. Class C
d. Class D
Explanation: Class C extinguishers use non-conductive agents to prevent
electrical shock.
3. What are Class D fire extinguishers specifically designed for?
a. Paper and wood
b. Grease and oil
c. Electrical wires
d. Combustible metals (magnesium, sodium, potassium)
Explanation: Class D extinguishers use dry powder to smother metal fires.
4. What does the acronym "PASS" stand for when using a fire extinguisher?
a. Pull, Aim, Squeeze, Sweep
, b. Push, Aim, Squeeze, Sweep
c. Pull, Arm, Squeeze, Sweep
d. Pull, Aim, Shake, Sweep
Explanation: PASS is the standard operating procedure for operating a
portable fire extinguisher.
5. Where can a laboratory worker find information regarding the hazards of a
specific chemical and the required PPE?
a. The employee handbook
b. Safety Data Sheet (SDS)
c. The quality control log
d. The centrifuge manual
Explanation: The SDS provides comprehensive health and safety information
for every chemical in the lab.
SECTION 2: MICROSCOPY
(Based on the Condenser question)
6. Which part of the microscope is used to adjust the amount of light reaching
the specimen?
a. Eyepiece
b. Stage
c. Iris Diaphragm
d. Coarse adjustment knob
Explanation: The diaphragm controls the aperture size to regulate light
intensity and contrast.
7. Which objective lens is typically used with immersion oil to achieve the
highest resolution?
a. 4x
b. 10x
c. 40x
d. 100x
, Explanation: Oil immersion prevents the refraction of light, allowing higher
magnification and clarity.
8. What is the purpose of the coarse adjustment knob?
a. To sharpen the image under high power
b. To bring the specimen into general focus
c. To move the slide left and right
d. To adjust the light intensity
Explanation: The coarse knob is used for initial focusing on low power
objectives.
9. If the eyepiece magnification is 10x and the objective lens is 40x, what is
the total magnification?
a. 50x
b. 100x
c. 400x
d. 4000x
Explanation: Total magnification = Eyepiece × Objective (10 × 40 = 400).
10.Which part of the microscope supports the slide being examined?
a. Base
b. Stage
c. Arm
d. Condenser
Explanation: The stage is the flat platform where the specimen slide is
placed.
SECTION 3: LABORATORY MATH & SOLUTIONS
(Based on the 3% solution calculation)
11.How many grams of solute are needed to make 500 mL of a 5% solution?
a. 5g
b. 15g
c. 25g
, d. 50g
Explanation: 5% = 5g/100mL. Therefore, 5 × 5 = 25g for 500mL.
12.If a solution is labeled as 10% w/v, what does this mean?
a. 10 grams of solute in 100 mL of solution
b. 10 mL of solute in 100 mL of solution
c. 10 grams of solute in 1 Liter of solution
d. 1 gram of solute in 10 mL of solvent
Explanation: w/v stands for weight/volume, meaning grams per 100 mL.
13.To prepare 100 mL of a 2% solution, how much solute is required?
a. 0.2g
b. 2g
c. 20g
d. 200g
Explanation: 2% of 100mL is 2g.
14.A technician needs to dilute a 10% solution to a 1% solution. This is a
dilution ratio of:
a. 1:2
b. 1:5
c. 1:10
d. 1:100
Explanation: 10% ÷ 1% = 10. This is a 1 to 10 dilution.
15.How many milliliters of a 10% solution are needed to provide 5 grams of
solute?
a. 5 mL
b. 50 mL
c. 500 mL
d. 5 mL
Explanation: 10g/100mL is the same as 1g/10mL. Thus, 5g = 50mL.
SECTION 4: QUALITY CONTROL (QC)
Answers | Medical Laboratory Scientist
Certification Prep | Guaranteed A+ Stuvia
Study Guide (Latest Updated Test Bank)
1. What are Class B fire extinguishers used for?
a. Ordinary combustibles
b. Flammable liquids (gasoline, oil, paint)
c. Electrical equipment
d. Combustible metals
Explanation: Class B extinguishers are designed for liquid fires that can flow.
2. Which type of fire extinguisher should be used for a fire involving energized
electrical equipment?
a. Class A
b. Class B
c. Class C
d. Class D
Explanation: Class C extinguishers use non-conductive agents to prevent
electrical shock.
3. What are Class D fire extinguishers specifically designed for?
a. Paper and wood
b. Grease and oil
c. Electrical wires
d. Combustible metals (magnesium, sodium, potassium)
Explanation: Class D extinguishers use dry powder to smother metal fires.
4. What does the acronym "PASS" stand for when using a fire extinguisher?
a. Pull, Aim, Squeeze, Sweep
, b. Push, Aim, Squeeze, Sweep
c. Pull, Arm, Squeeze, Sweep
d. Pull, Aim, Shake, Sweep
Explanation: PASS is the standard operating procedure for operating a
portable fire extinguisher.
5. Where can a laboratory worker find information regarding the hazards of a
specific chemical and the required PPE?
a. The employee handbook
b. Safety Data Sheet (SDS)
c. The quality control log
d. The centrifuge manual
Explanation: The SDS provides comprehensive health and safety information
for every chemical in the lab.
SECTION 2: MICROSCOPY
(Based on the Condenser question)
6. Which part of the microscope is used to adjust the amount of light reaching
the specimen?
a. Eyepiece
b. Stage
c. Iris Diaphragm
d. Coarse adjustment knob
Explanation: The diaphragm controls the aperture size to regulate light
intensity and contrast.
7. Which objective lens is typically used with immersion oil to achieve the
highest resolution?
a. 4x
b. 10x
c. 40x
d. 100x
, Explanation: Oil immersion prevents the refraction of light, allowing higher
magnification and clarity.
8. What is the purpose of the coarse adjustment knob?
a. To sharpen the image under high power
b. To bring the specimen into general focus
c. To move the slide left and right
d. To adjust the light intensity
Explanation: The coarse knob is used for initial focusing on low power
objectives.
9. If the eyepiece magnification is 10x and the objective lens is 40x, what is
the total magnification?
a. 50x
b. 100x
c. 400x
d. 4000x
Explanation: Total magnification = Eyepiece × Objective (10 × 40 = 400).
10.Which part of the microscope supports the slide being examined?
a. Base
b. Stage
c. Arm
d. Condenser
Explanation: The stage is the flat platform where the specimen slide is
placed.
SECTION 3: LABORATORY MATH & SOLUTIONS
(Based on the 3% solution calculation)
11.How many grams of solute are needed to make 500 mL of a 5% solution?
a. 5g
b. 15g
c. 25g
, d. 50g
Explanation: 5% = 5g/100mL. Therefore, 5 × 5 = 25g for 500mL.
12.If a solution is labeled as 10% w/v, what does this mean?
a. 10 grams of solute in 100 mL of solution
b. 10 mL of solute in 100 mL of solution
c. 10 grams of solute in 1 Liter of solution
d. 1 gram of solute in 10 mL of solvent
Explanation: w/v stands for weight/volume, meaning grams per 100 mL.
13.To prepare 100 mL of a 2% solution, how much solute is required?
a. 0.2g
b. 2g
c. 20g
d. 200g
Explanation: 2% of 100mL is 2g.
14.A technician needs to dilute a 10% solution to a 1% solution. This is a
dilution ratio of:
a. 1:2
b. 1:5
c. 1:10
d. 1:100
Explanation: 10% ÷ 1% = 10. This is a 1 to 10 dilution.
15.How many milliliters of a 10% solution are needed to provide 5 grams of
solute?
a. 5 mL
b. 50 mL
c. 500 mL
d. 5 mL
Explanation: 10g/100mL is the same as 1g/10mL. Thus, 5g = 50mL.
SECTION 4: QUALITY CONTROL (QC)
