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MLPAO EXAM SET, QUESTIONS AND ANSWERS.
UPDATED 2023/2024| COMPLETE VERIFIED SOLUTIONS 100%
"Blood samples for cell counts must be thoroughly mixed immediately before testing to: a. prevent the clumping of platelets b. prevent the formation of small clots c. oxygenate the sample d. ensure even distribution of all blood components
e. mix anticoagulant with the blood - CORRECT ANSWER d. ensure even distribution of all blood
components" "What areas on an infant are suitable for skin puncture: a. any calloused areas of the foot b. the second or third finger on either hand c. the posterior curvature of the heel
d. the lateral, flat portion of the heel - CORRECT ANSWER d. the lateral, flat portion of the heel"
"What will increase CO2 tension when incubating microbiology cultures? a. CO2 incubator b. gas pak c. candle jar d. anaerobic jar
e. a & c - CORRECT ANSWER e. a & c"
"The anticoagulant in a green top vacutainer is: a. sodium citrate b. EDTA c. heparin d. sodium fluoride
e. potassium oxalate - CORRECT ANSWER c. heparin"
"Which unit is the smallest? a. nanometer b. meter c. millimeter d. micrometer
e. decimeter - CORRECT ANSWER a. nanometer"
"Which method is acceptable to discard a used needle? a. discard whole needle into puncture -proof container b. cut needle and discard into puncture proof container c. bend needle and discard into puncture proof container d. discard into biohazard bag
e. discard into regular garbage - CORRECT ANSWER a. discard whole needle into puncture -proof
container" "Blood films are not fixed before staining because: a. they are fixed with heat after staining b. they are fixed with phosphate buffer during staining c. blood cells do not require fixing d. Wright's stain contains methanol, which does the fixing
e. the anti-coagulant EDTA acts as a fixing agent - CORRECT ANSWER d. Wright's stain contains
methanol, which does the fixing" "A volumetric pipette: a. gives critical measurements b. is made of Class A standards c. has a bulged out portion in the middle d. is calibrated TD
e. all of the above - CORRECT ANSWER e. all of the above"
"A patient with a highly contagious lung infection would be hospitalized in: a. reverse isolation b. wound and skin precautions isolation c. respiratory isolation d. enteric isolation
e. standard ward - CORRECT ANSWER c. respiratory isolation"
"Sterilization by dry heat is done at: a. 100 degrees C b. 121 degrees C c. 150 degrees C d. 160 degrees C
e. 250 degrees C - CORRECT ANSWER d. 160 degrees C"
"Which type of water is most chemically pure:
c. The surgical removal and examination of tissue
d. The clinical analysis of a urine sample - CORRECT ANSWER b. A small representative of body sample"
"The purpose of cleansing the site selected for venipuncture is: a. To cause the veins to be more prominent b. To allow blood flow to the area c. To decrease circulation in the arteries
d. To carry microorganisms away from the puncture site - CORRECT ANSWER d. To carry microorganisms
away from the puncture site" "Whole blood is obtained; a. By using a tube containing an anticoagulant b. By centrifuging a clotted specimen c. By using a red- stoppered tube
d. By using an SST tube - CORRECT ANSWER a. By using a tube containing an anticoagulant"
"Venipuncture needles should be discarded: a. Directly into the garbage b. They are actually recycled, not discarded c. Directly into an autoclave bag
d. Directly into a Sharps container - CORRECT ANSWER d. Directly into a Sharps container"
"If a vein feels lumpy or ropey when palpated it is probably: a. Flabby b. Deep c. Tortuous
d. Superficial - CORRECT ANSWER Tortuous"
"To convert Farenheit to Celcius: a. 5/9 (F-32) b. 9/5 + 32 (C) c. 5/9 - 32 (F)
d. 9/5 (C + 32) - CORRECT ANSWER a. 5/9 (F-32)"
"Glassware used to measure 24 hour urine is a (an) a. Volumetric flask b. Beaker
c. Erlenmeyer cylinder d. Graduated cylinder
e. Safety bulb - CORRECT ANSWER d. Graduated cylinder"
"Glassware used to make 100 mls. of a 12% solution is a (an): a. Volumetric flask b. Beaker c. Erlenmeyer cylinder d. Graduated cylinder
e. Safety bulb - CORRECT ANSWER a. Volumetric flask"
"A suction device used to draw up liquids is a (an) a. Volumetric flask b. Beaker c. Erlenmeyer cylinder d. Graduated cylinder
e. Safety bulb - CORRECT ANSWER e. Safety bulb"
"Which piece of glassware would not give critical measurement? a. Volumetric flask b. Beaker c. Erlenmeyer cylinder d. Graduated cylinder
e. safety bulb - CORRECT ANSWER b. Beaker"
"The durable material used to make heat resistant glassware is: a. Polyethylene b. Soda lime c. Polystyrene
d. Borosilicate - CORRECT ANSWER d. Borosilicate"
"Solid crystals of potassium oxalate are added to distilled water in a container. What term would describe the potassium oxalate? a. solution b. solvent c. solute d. reagent
e. a & c - CORRECT ANSWER "
"A biopsy is: a. a removal of biological fluid b. the removal of an organ c. a post mortem examination d. excision of a representative tissue sample
e. a collection of blood - CORRECT ANSWER d. excision of a representative tissue sample"
"Fixation is important in tissue processing because it: a. prevents cell morphology changes and shrinkage b. allows tissue to be examined in a life-like condition c. facilitates the staining process d. a & c
e. a, b, & c - CORRECT ANSWER e. a, b, & c"
"The liquid portion of blood remaining after a clot has formed is called: a. the buffy coat b. serum c. plasma d. lymph
e. tissue fluid - CORRECT ANSWER b. serum"
"Which test could not be performed on a serum sample: a. iron b. vitamin B c. total lipids d. clotting factors
e. potassium - CORRECT ANSWER d. clotting factors"
"The shape of a normal erythrocyte is described as: a. biconcave disc b. spherocyte c. polymorphonucleocytes d. thin column
e. bull's eye - CORRECT ANSWER a. biconcave disc"
"Glucose results are correctly reported in: a. g/mmol
b. mmol/L c. g/L d. g/ml
e. g/dl - CORRECT ANSWER b. mmol/L"
"Which statement is false when performing a venipuncture: a. the vein is entered at a 15-20 degree angle b. the tubes are pushed onto the needle with the thumb of the strongest hand c. the bevel of the needle is pointed up when entering the vein d. the tourniquet is removed before withdrawing the needle
e. the patients arm is cleansed before palpating the vein - CORRECT ANSWER e. the patients arm is
cleansed before palpating the vein" "A biohazardous container is used to discard: a. lancets b. needles c. band-aid wrappers d. a & b
e. a, b & c - CORRECT ANSWER d. a & b"
"Which needle gauge corresponds with the smallest needle size: a. 18 b. 20 c. 21 d. 22
e. 23 - CORRECT ANSWER e. 23"
"The vacutainer tube which is used to collect and separate serum is the: a. red b. green c. lavender d. light blue
e. SST - CORRECT ANSWER e. SST"
"If a patient faints during a venipuncture, you should: a. call the physician at once b. remove the needle and attend to the patient
e. 37 C - CORRECT ANSWER c. 3 C"
"An automated hematology cell count uses the principle of: a. diffusion b. color absorption changes c. high-frequency sound waves d. changes in cell electrical currents
e. light wave scattering - CORRECT ANSWER d. changes in cell electrical currents"
"The maximum depth to perform a heel puncture on a newborn is: a. 1.5mm b. 2.0mm c. 2.4mm d. 2.8mm
e. 3.0mm - CORRECT ANSWER c. 2.4mm"
"The first drop of blood is wiped away after performing a skin puncture to: a. remove any pathogens that are present b. increase blood flow to the area c. remove the last traces of alcohol d. remove any excess tissue fluid
e. c & d - CORRECT ANSWER e. c & d"
"What laboratory department studies antigen-antibody reaction? a. hematology b. microbiology c. immunology d. chemistry
e. coagulation - CORRECT ANSWER c. immunology"
"What tube would be drawn for ANA? a. red b. grey c. SST d. green
e. light blue - CORRECT ANSWER c. SST"
"What tube would be collected for a cross-match? a. lavender b. light blue c. green d. grey
e. plain red top - CORRECT ANSWER e. plain red top"
"Separated serum that is dark yellow to amber in color is termed: a. crenated b. lipemic c. jaundiced d. icteric
e. hemolyzed - CORRECT ANSWER d. icteric"
"Which factor would interfere with the growth of a pathogen? a. appropriate nutrients b. darkness c. a moist environment d. an acidic pH
e. a temperature of 37 C - CORRECT ANSWER d. an acidic pH"
"A specimen is: a. material spread on a slide b. an amount of blood or urine c. a small sample taken to represent the whole organism or system d. a colony of micro-organisms growing on solid medium
e. a technique used to microscopically examine urine - CORRECT ANSWER c. a small sample taken to
represent the whole organism or system" "The purpose of heat fixing a bacterial smear is to: a. prevent cells from being washed off during staining b. causes the cells to absorb the stain more easily c. provide a warm temperature for the bacteria to grow d. make the cells visible under the microscope
e. destroy the bacterial cell wall - CORRECT ANSWER a. prevent cells from being washed off during
staining" "The site of a specimen must be written on a swab container:
d. produces a pure culture
e. identifies the appropriate antibiotic needed to kill the micro-organism - CORRECT ANSWER e.
identifies the appropriate antibiotic needed to kill the micro-organism" "Which is most commonly used for protection when processing swabs, body fluid or blood?: a. fume hood b. class l laminar flow hood c. class ll laminar flow hood d. class lll laminar flow hood
e. glove box - CORRECT ANSWER c. class ll laminar flow hood"
"You are collecting a blood glucose level. The patient asks if you think he has diabetes. You would tell him: a. this is a possibility, but you are not positive b. you are unable to give him any information c. to discuss this with your doctor d. you have been instructed not to give out any information, therefore you can't discuss it
e. to read a prepared pamphlet and make his own decision - CORRECT ANSWER c. to discuss this with
your doctor" "The autoclave is set at _____ for small loads: a. 121C for 50min at 6 p.s.i. b. 130C for 30min at 30 p.s.i. c. 121C for 15min at 15 p.s. i. d. 121C for 45min at 15 p.s.i.
e. 154C for 20min at 20 p.s.i. - CORRECT ANSWER b. 130C for 30min at 30 p.s.i."
"The universally accepted disinfectant for the medical workplace is: a. 2% glutaraldehyde b. 1% hypochlorite c. 10% formalin d. 70% isopropyl alcohol
e. 5% iodine - CORRECT ANSWER b. 1% hypochlorite"
"A patient's health card number consists of ___ digits: a. 4 b. 6 c. 8 d. 10
e. 12 - CORRECT ANSWER d. 10"
"A 1/6 dilution of serum in water was made. The glucose result was 4.0 mmol/L. What is the reported result: a. 0.66 mmol/L b. 4.0 mmol/L c. 24.0 mmol/L d. 40.0 mmol/L
e. 60.0 mmol/L - CORRECT ANSWER c. 24.0 mmol/L"
"100ml of 20% hydrochloric acid will make how many mls of 4% hydrochloric acid: a. 50ml b. 80ml c. 100ml d. 500ml
e. 1000ml - CORRECT ANSWER d. 500ml"
"How many grams of NaCl are needed to make 300ml of a 2% solution: a. 2 grams b. 4 grams c. 6 grams d. 20 grams
e. unable to determine with information - CORRECT ANSWER c. 6 grams"
"Approximately how many centimeters are in one foot? a. 3 b. 12 c. 24 d. 30
e. 100 - CORRECT ANSWER d. 30"
"Two standard deviations from the mean include: a. 5% of all values b. 34% of all values c. 50% of all values d. 68% of all values
e. 95% of all values - CORRECT ANSWER e. 95% of all values"
"When performing a venipuncture, bright red blood spurts into the tube. This means:
c. acid phosphate d. BUN
e. creatine - CORRECT ANSWER c. acid phosphate"
"WHMIS stands for: a. worker harmful material information sheets b. worker handbook on mechanical and industrial safety c. workplace hazardous materials information system d. workplace harmful methods and industrial security
e. none of the above - CORRECT ANSWER c. workplace hazardous materials information system"
"MSDS sheets do not contain: a. product identifier and use b. hazardous ingredients c. first aid measures d. preventative measures
e. hazard symbols - CORRECT ANSWER e. hazard symbols"
"When using acid and water: a. acid is slowly added to water b. water is slowly added to acid c. water and acid are added together d. it makes no difference how they are added
e. they are never mixed as heat is produced - CORRECT ANSWER a. acid is slowly added to water"
"Insidious hazards: a. include substances which react violently with each other b. include aerosols, carcinogens, mutagens, and radiation c. are substances that cause injury by direct chemical action d. are graded using TLV and TLV-S.T.E.L. values
e. are always chemical in nature - CORRECT ANSWER b. include aerosols, carcinogens, mutagens, and
radiation" "Which test would not be performed on plasma or serum? a. lipoprotein electrophoresis b. iron c. BUN d. hemoglobin electrophoresis
e. electrolyte profile - CORRECT ANSWER d. hemoglobin electrophoresis"
"The function unit of the kidney is the: a. renal cell b. renal cortex c. renal tubule d. bladder
e. nephron - CORRECT ANSWER e. nephron"
"Pus cells or fat in urine would cause this color: a. red b. yellow-brown c. greenish-blue d. milky-white
e. black - CORRECT ANSWER d. milky-white"
"The end products of protein digestion are: a. glycerol b. fatty acids c. triglycerides d. monosaccharides
e. amino acids - CORRECT ANSWER e. amino acids"
"Which statement is true regarding the use of reagent strips? a. heat and moisture do not affect the reagent reactivity b. timing of each reagent area is not necessary c. reagent sticks are held vertically when reading d. all reagent sticks tests perform specific gravity
e. reagent strips should be tested daily with control - CORRECT ANSWER e. reagent strips should be
tested daily with control" "Before performing an R & M on a specimen, the urine would be; a. filtered b. brought to room temperature c. centrifuged d. well-mixed
e. b & d - CORRECT ANSWER e. b & d"
"A backup test(s) to confirm a positive protein in urine would be:
c. the smear is spread too slowly d. the angle of the spreader is too low
e. a dirty spreader is used - CORRECT ANSWER d. the angle of the spreader is too low"
"The test measuring the oxygen-carrying capacity of RBC's is the: a. CBC b. Hct c. ESR d. Hgb
e. MCV - CORRECT ANSWER d. Hgb"
"An immature neutrophil is called: a. blast cell b. LE cell c. band cell d. reticulocyte
e. packed cell - CORRECT ANSWER c. band cell"
"The test that counts the number of immature RBC's is the: a. osmotic fragility test b. differential c. reticulocyte count d. RBC count
e. stab cell count - CORRECT ANSWER c. reticulocyte count"
"Which test does not monitor a patient's coagulation mechanism? a. PT b. ACTH c. APTT d. FDP
e. platelet count - CORRECT ANSWER b. ACTH"
"A plasma protein involved in coagulation is: a. immunoglobulin b. gamma globulin c. albumin d. erythropoietin
e. fibrinogen - CORRECT ANSWER e. fibrinogen"
"The buffy coat is made up of: a. WBCs and platelets b. granulocytes c. erythrocytes and granulocytes d. reticulocytes
e. platelets - CORRECT ANSWER a. WBCs and platelets"
"Quality control is: a. running known and unknown controls b. involvement in LPTP program c. for accuracy and precision d. insuring control values are within 2 SD(standard deviants)
e. all of the above - CORRECT ANSWER e. all of the above"
"A microbiology transport medium will contain activated charcoal: a. to prevent bacteria death b. to help staining process c. to absorb toxic substances d. to keep a neutral ph
e. to maintain oxygen levels - CORRECT ANSWER c. to absorb toxic substances"
"Which is not a liver function test?: a. albumin b. ALP c. CK d. bilirubin
e. AST - CORRECT ANSWER c. CK"
"When an agar plate is streaked correctly the final result is: a. a pure culture b. individual colonies c. no growth pathogens d. dense growth which covers the plate
e. a non-contaminated specimen - CORRECT ANSWER b. individual colonies"
"Which chemical is not explosive?: a. crystal violet
