MLPAO Exam Practise
Glassware used to measure 24-hour urine volumes is a: - ANS-graduated cylinder
Glassware used to make 100 ml of a 12% solution is a: - ANS-volumetric flash
A suction device used to draw up liquids is a: - ANS-safety bulb
The pipette with a bulged-out portion in the middle is a: - ANS-volumetric pipette
Which piece of glassware would not give critical measurement: - ANS-beaker
The durable material used to make heat resistant glassware is: - ANS-borosilicate
Solid crystals of potassium oxalate are added to distilled water in a container. What term
would describe the potassium oxalate? - ANS-solute
The destruction of all micro-organisms including spores is called: - ANS-sterilization
A ug is a unit to describe: - ANS-weight
A pH of 2 is _____ than a pH of 5: - ANS-1000 times more acidic
Cells in a hypertonic solution will: - ANS-dehydrate
The solution used to fix a pap smear is: - ANS-cytospray
Blood for an RBC count must be prepared from: - ANS-EDTA blood
Which reagent is not routinely used to preserve tissue in a life-like manner: - ANS-10%
formalin
Which piece of histology equipment is not temperature dependent: - ANS-microtome
. A biopsy is: - ANS-excision of a representative tissue sample
During tissue processing, what is the correct sequence of steps: - ANS-dehydration,
clearing, infiltration
,Fixation is important in tissue processing because it: - ANS--prevents cell morphology
changes and shrinkage
-allows tissue to be examined in a life-like condition
-facilitates the staining process
The liquid portion of blood remaining after a clot has formed is called: - ANS-serum
Which test could not be performed on a serum sample: - ANS-clotting factors
. The shape of a normal erythrocyte is described as: - ANS-biconcave disk
Glucose results are correctly reported in: - ANS-mmol/L
If a patient refuses to have a venipuncture done you should: - ANS-notify the patients
physician
Which statement is false when performing a venipuncture: - ANS-the patient's arm is
cleansed before palpating the vein
A biohazardous container is used to discard: - ANS--lancets
-needled
Which needle gauge corresponds with the smallest needle size: - ANS-23
The vacutainer tube which is used to collect and separate serum is the: - ANS-SST
If a lavender top, plain red top, grey top, and light blue top tubes are collected,
what is the order of draw: - ANS-plain red top, light blue, lavender, grey
The tourniquet is: - ANS-used to increase venous fill
If a patient faints during a venipuncture, you should: - ANS-remove the needle and
attend to the patient
What vein/veins is not used to obtain a venous blood sample: - ANS-femoral vein
A blood specimen collected in a heparinized tube is centrifuged. It will separate into: -
ANS-plasma, buffy coat, RBC
Hemolysis may result from: - ANS--using a 25-gauge needle on an adult Page 8/99
,-vigorously shaking the blood specimen
-refrigerating the vacutainer before use
-leaving the tourniquet on for 3 minutes
The test procedure that uses a Westergren tube is: - ANS-erythrocyte sedimentation
rate
Latex gloves protect the lab employee from: - ANS-) body fluids
Which statement is false when setting up an ESR: - ANS-it should be set up near a
centrifuge
What is the normal temperature of a laboratory refrigerator: - ANS-3 C
The purpose of doing a differential is to: - ANS-determine the proportions of WBC's in
whole blood
Blood samples for cell counts must be thoroughly mixed immediately before testing to: -
ANS-ensure even distribution of all blood components
An automated hematology cell count uses the principle of: - ANS-changes in cell
electrical currents
The maximum depth to perform a heel puncture on a newborn is: - ANS-2.4 mm
The first drop of blood is wiped away after performing a skin puncture to: - ANS-remove
the last traces of alcohol & remove any excess tissue fluid
What areas on an infant are suitable for skin puncture: - ANS-The lateral, flat portion of
the heel
What laboratory department studies antigen-antibody reaction: - ANS-Immunology
What tube would be drawn for ANA: - ANS-SST
A disinfectant used on metal surface is: - ANS-2% glutaraldehyde
What tube would be collected for a cross-match: - ANS-Plain Red Top
Separated serum that is dark yellow to amber in color is termed: - ANS-Icteric
, Which factor would interfere with the growth of a pathogen: - ANS-An Acidic pH
A specimen is: - ANS-A small sample taken to represent the whole organism or system
The purpose of heat fixing a bacterial smear is to: - ANS-Prevent cells from being
washed off during staining
The site of a specimen must be written on a swab container: - ANS-To determine
selection of suitable agar and atmospheric requirements
Identify the correct sequence of steps on the gram stain procedure: - ANS-primary stain,
mordant, decolorizing, counterstain
How should commercially prepared culture plates be stored: - ANS-Inverted to prevent
condensation dripping on the media & at a temperature of 2*C - 4*C
Which Gram stain reagent acts as a mordant to bind the stain to the bacteria: -
ANS-Gram's Iodine
What is true regarding blood culture collection: - ANS-The site is cleaned with betadine
and alcohol, an aerobic and anaerobic sample is collected, blood culture tubes are
always drawn first, specimens are never refrigerated
Susceptibility testing: - ANS-Identifies the appropriate antibiotic needed to kill the
micro-organism
What is true about a specimen that is cultured: - ANS-Equipment required is a loop and
a direct flame, the media is brought to room temperature before use, the media selected
is dependent on the type of specimen, the loop is sterilized prior to inoculation
What's true about when a Gram stain is performed - ANS-Acetone-Alcohol decolonizes
gram-negative bacteria, safaris stains the gram-negative bacteria red, Gram's iodine is
used to bind the primary stain, crystal violet stains the gram-positive bacteria purple
Which is most commonly used for protection when processing swabs, body fluid or
blood: - ANS-Class II Laminar Flow Hood
You are collecting a blood glucose level. The patient asks if you think he has diabetes.
You would tell him: - ANS-to discuss this with the doctor as he can answer this question
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