#1
In a blood test, what does the term 'CBC' stand for?
Complete Blood Count
ExplanationCounts various blood cell types.
#2
What is the primary purpose of a sphygmomanometer in a medical laboratory?
Measuring blood pressure
ExplanationMeasures pressure in the arteries.
#3
What is the primary purpose of a spectrophotometer in a laboratory?
Measuring light absorbance of a substance
ExplanationQuantifies the amount of light absorbed by a substance.
#4
In clinical chemistry, what does the term 'LDL' stand for?
Low-Density Lipoprotein
ExplanationMeasures cholesterol transport in the blood.
#5
What is the primary purpose of a tourniquet in a phlebotomy procedure?
To control blood flow during venipuncture
ExplanationPrevents blood flow during blood collection.
#6
Which laboratory procedure is commonly used to separate components of a mixture based on their size and charge?
Chromatography
ExplanationSeparates mixture components based on size and charge.
#7
Which of the following is a common protocol for sterilizing laboratory equipment?
Autoclaving
ExplanationUses steam under pressure to sterilize.
#8
In microbiology, what is the primary function of a Gram stain?
Determine bacterial shape
ExplanationClassifies bacteria into Gram-positive or Gram-negative based on cell wall properties.
#9
What is the purpose of a differential stain in microbiology?
Distinguish between different types of cells or structures
ExplanationHighlights differences in cell structure.
#10
Which of the following is a common protocol for preserving biological samples for long-term storage?
Freezing
ExplanationMaintains samples at low temperatures to prevent degradation.
#11
In immunology, what does the term 'antigen' refer to?
Foreign substance that induces an immune response
ExplanationStimulates the immune system.
#12
In hematology, what does the term 'PT' stand for?
Prothrombin Time
ExplanationAssesses blood clotting time.
#13
Which of the following is a common method for preparing a blood smear for microscopic examination?
Wright staining
ExplanationStains blood cells for microscopic visualization.
#14
In microbiology, what is the primary function of a Petri dish?
Cultivate microorganisms
ExplanationProvides a surface for culturing microorganisms.
#15
Which laboratory technique is commonly used to analyze the size and shape of cells or particles in a liquid suspension?
Flow Cytometry
ExplanationMeasures properties of cells or particles in suspension.
#16
Which of the following is a common method for detecting the presence of specific proteins in a sample?
Western Blot
ExplanationIdentifies specific proteins in a sample.
#17
What is the primary purpose of a spirometer in a pulmonary function test?
Measuring lung volume and airflow
ExplanationAssesses lung function.
#18
Which laboratory technique is commonly used to separate DNA fragments based on their size?
Gel Electrophoresis
ExplanationSeparates DNA fragments based on size and charge.
#19
What is the primary purpose of ELISA (Enzyme-Linked Immunosorbent Assay) in a laboratory setting?
Detecting antibodies or antigens
ExplanationIdentifies antibodies or antigens presence.
#20
Which laboratory procedure is commonly used to identify the presence of specific DNA sequences in a sample?
Polymerase Chain Reaction (PCR)
ExplanationAmplifies and detects specific DNA sequences.
#21
Which laboratory technique is commonly used to separate proteins based on their size and charge?
Western Blot
ExplanationIdentifies proteins based on size and charge.
#22
What is the purpose of a Gram-negative bacteria stain in microbiology?
To distinguish between bacterial species
ExplanationDifferentiates between Gram-positive and Gram-negative bacteria.
#23
Which laboratory technique is commonly used to amplify and analyze specific regions of DNA?
Polymerase Chain Reaction (PCR)
ExplanationAmplifies and analyzes specific DNA sequences.
#24
Which of the following is a common method for analyzing the structure of proteins?
Nuclear Magnetic Resonance (NMR)
ExplanationDetermines protein structure.