NEW
Font size
WorksheetsExam One Practice
Total questions: 27
Worksheet time: 15mins
The total magnification of a compound light microscope is:
The magnification of the objective lens only
The magnification of the ocular lens only
The sum of the objective and ocular magnifications
The product of the objective and ocular magnifications
What does resolving power of a microscope refer to?
The maximum light intensity
The ability to distinguish two closely spaced objects as separate
The maximum magnification possible
The clarity of the ocular lens
Numerical Aperture (NA) of a microscope objective is:
A measure of magnification power
An index of resolving power and light-gathering ability
The distance between object and lens
The type of light source used
Which part of the microscope directs and focuses light onto the specimen?
Ocular lens
Condenser
Stage
Objective
The iris diaphragm of a microscope is used to:
Change magnification
Adjust the amount of light entering the field of view
Hold the specimen slide
Adjust fine focus
Oil-immersion objectives are primarily used for:
Low-power viewing
High-resolution viewing of very small specimens
Increasing field of view
Digital imaging
In brightfield microscopy, objects appear:
Dark on a bright background
Bright on a dark background
Fluorescent under UV light
Three-dimensional
Which microscope provides the highest magnification and resolution?
Brightfield
Darkfield
Electron microscope
Phase-contrast microscope
Which microscope is most useful for identifying crystals in synovial fluid?
Fluorescence microscope
Polarized microscope
Phase-contrast microscope
Darkfield microscope
Digital microscopy systems are capable of:
Preclassifying blood cells using artificial neural networks
Storing up to 20,000 slides in a database
Remote review of smears
All of the above
According to studies, what percentage of laboratory errors occur in the preanalytical phase?
50%
70%
90%
98%
The Joint Commission National Patient Safety Goals require patient identification using:
Patient’s initials only
Patient’s name and birth date
Medical record number only
Room number
Which of the following is not one of the six goals of the U.S. Institute of Medicine for health care delivery?
Safety
Timeliness
Profitability
Patient-centered focus
Which agency enforces workplace safety standards for laboratories in the U.S.?
CDC
CAP
OSHA
TJC
Which of the following is required under OSHA’s Hazard Communication Standard?
PPE use only when handling blood
Chemical manufacturers must provide Safety Data Sheets (SDS) in a standardized format
Recapping of all needles after use
Annual TB skin tests for all laboratory staff
HIPAA was enacted in 1996 to ensure:
Patient informed consent
Patient confidentiality of health information
National licensure of laboratory personnel
Accreditation of laboratories
Which laboratory department specializes in testing related to immune responses and antigen-antibody reactions?
Hematology
Immunology/Serology
Toxicology
Flow Cytometry
Which of the following describes the “chain of custody”?
The process of accrediting laboratories
Documenting each step of specimen handling in medicolegal cases
The order of blood draw tubes
The system for maintaining quality control records
Which of the following best describes standard precautions?
Wearing gloves only when handling blood
Using PPE based on the patient’s diagnosis
Treating all blood and body fluids as potentially infectious
Only applying precautions to patients known to be HIV positive
A patient faints during venipuncture. What is the first action the MLA should take?
Continue drawing blood quickly to finish the procedure
Lay the patient flat and protect them from injury
Call the physician immediately
Loosen the tourniquet and remove the needle, then provide support
Which laboratory department primarily performs tests such as CBC, WBC differential, and hemoglobin?
Hematology
Chemistry
Microbiology
Immunology
Which specimen requires protection from light during transport?
Serum potassium
Bilirubin
Calcium
Sodium
What part is AB?
Stage
Diaphragm
Light Source
base
