CSMLS MLA Practice Test 2: Medical Laboratory Assistant Exam Preparation, Exams of Social Sciences

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CSMLS MLA PRACTICE TEST 2

Universal precautions apply to which type of hazard? A.) Bloodborne pathogens B.) Dangerous chemicals C.) Environmental hazards D.) Fire E.) Radiation - Answers- A.) Bloodborne pathogens When trying to fix an electrical machine, your first action should be to: A.) Replace any old cables B.) Replace the circuit boards C.) Replace the fuses D.) Turn off all electricity to the lab E.) Turn the equipment off - Answers- E.) Turn the equipment off When mixing acid and water: A.) You should add the acid quickly to the water B.) You should add the acid slowly to the water C.) You should add the water quickly to the acid D.) You should add the water slowly to the acid E.) It makes no difference how they are mixed - Answers- B.) You should add the acid slowly to the water Which of these chemicals is NOT explosive? A.) Crystal violet B.) Ether C.) Picric acid D.) Potassium metal E.) Sodium azide - Answers- A.) Crystal violet Which of these is an acceptable way to discard a used needle? A.) Bend the needle and discard it into a puncture-proof container B.) Cut the needle and discard it into a puncture-proof container C.) Discard the needle into a biohazard bag D.) Discard the needle into the regular garbage E.) Discard the whole needle into a puncture-proof container - Answers- E.) Discard the whole needle into a puncture-proof container A CO2 fire extinguisher can be used on which of these fires? A.) Flammable gas B.) Flammable liquid C.) Magnesium D.) Paper E.) Wood - Answers- B.) Flammable liquid

Before turning on a centrifuge, make sure: A.) All liquid specimen tubes are uncovered B.) The centrifuge is balanced C.) The centrifuge is on a slanted surface D.) The cover is open - Answers- B.) The centrifuge is balanced What is the term for a chemical that immediately damages human tissue on contact? A.) Carcinogen B.) Combustible C.) Corrosive D.) Flammable E.) Toxic - Answers- C.) Corrosive What is the first step when using a fire extinguisher? A.) Aim the fire extinguisher at the fire B.) Pull the pin C.) Squeeze the handle D.) Sweep the hose from side to side at the base of the fire - Answers- B.) Pull the pin *Acronym PASS (Pull, Aim, Squeeze, Sweep) Which of these items is not found in biohazard spill kits? A.) Absorbent material B.) Autoclavable waste bags C.) Disinfectant D.) Petri dishes E.) Safety goggles - Answers- D.) Petri dishes Which would be the best substance to disinfect a blood spill on a lab countertop before clean up? A.) 70% isopropyl alcohol B.) A 1:10 dilution of bleach C.) Antibacterial soap and water D.) Providone-iodine - Answers- B.) A 1:10 dilution of bleach A skin cut is an example of which link in the chain of infection? A.) Infectious agent B.) Mode of transmission C.) Portal of entry D.) Reservoir E.) Susceptible host - Answers- C.) Portal of entry Drying is not effective against: A.) Helminths B.) Spores C.) Vegetative cells D.) Viruses - Answers- B.) Spores

The three main types of ionizing radiation are alpha, beta and? A.) Delta B.) Gamma C.) Lambda D.) Theta E.) Zeta - Answers- B.) Gamma In second-degree burns: A.) The damage extends to the dermis and blisters may be apparent B.) The damage extends to the subcutaneous layer and there is significant fluid loss C.) The damage is only superficial and can be treated with moisturizer D.) The risk of death is high and immediate medical help is needed - Answers- A.) The damage extends to the dermis and blisters may be apparent Which vacutainer tube is used to collect a blood sample for a Factor IX assay? A.) Gray B.) Lavender C.) Light blue D.) Red E.) SST - Answers- C.) Light blue If a chemical produces harmful fumes, it should be used only in a: A.) Autoclave B.) Biological safety cabinet C.) Fume hood or chemical hood D.) Public space E.) Sealed room - Answers- C.) Fume hood or chemical hood A risk or hazard to health or the environment from biological agents is called a: A.) Biohazard B.) Environmental hazard C.) Exposure hazard D.) Green hazard E.) Sepsis hazard - Answers- A.) Biohazard The responsibility for identifying employees at risk of exposure to blood or OPIM lies with the: A.) Employer B.) Government C.) Patient D.) Union - Answers- A.) Employer Which of these uses high-speed rotation in a closed chamber? A.) Centrifuge B.) Evaporator

C.) Hot plate D.) Shaker - Answers- A.) Centrifuge What might happen is an angle of 8 degrees is used when performing venipuncture? A.) A deep hematoma may form B.) The needle may go completely through the vein C.) The needle may enter above the vein D.) The needle may go through the posterior wall of the vein E.) Nothing will happen as this is the correct angle - Answers- C.) The needle may enter above the vein *Correct angle of insertion is 15 degrees At what speed and for how long is an SST centrifuged in a standard centrifuge? A.) 1000 to 2000 rpm for 10 minutes B.) 1000 to 2000 rpm for 5 minutes C.) 4000 to 5000 rpm for 10 minutes D.) 4000 to 5000 rpm for 5 minutes - Answers- C.) 4000 to 5000 rpm for 10 minutes When a blood specimen in a gray-top tubes is centrifuged, it separates into: A.) Plasma, buffy coat and red blood cells B.) Plasma, buffy coat and white blood cells C.) Red blood cells, white blood cells and platelets D.) Serum, buffy coat and red blood cells E.) Serum, buffy coat and white blood cells - Answers- A.) Plasma, buffy coat and red blood cells Which vacutainer tube is used to collect and separate serum? A.) Green B.) Lavender C.) Light blue D.) Red E.) SST - Answers- E.) SST Tourniquets should be: A.) Applied very tightly to the arm B.) Left on the arm for at least three minutes C.) Removed after the needle is withdrawn D.) Tight enough to slow arterial flow E.) Tight enough to slow venous flow - Answers- E.) Tight enough to slow venous flow Westergreen tubes are used for which test? A.) Differential B.) Erythrocyte Sedimentation Rate (ESR) C.) Hematocrit D.) Microhematocrit E.) Reticulocyte count - Answers- B.) Erythrocyte Sedimentation Rate (ESR)

Which tube would be drawn for an antinuclear antibody test (ANA)? A.) Green B.) Grey C.) Light blue D.) Red E.) SST - Answers- E.) SST Which of these is a patient identifier? A.) Date and time of collection B.) Patient name C.) Patient's room number D.) Specimen type E.) Tests required - Answers- B.) Patient's name Identify the false statement about specimen cultures A.) The Petri lid is placed upright on the bench to prevent contamination B.) The loop is sterilized before inoculation C.) The loop should be flamed between streaks D.) The media is brought to room temperature before use E.) The media selected depends on the type of specimen - Answers- A.) The Petri lid is placed upright on the bench to prevent contamination *Doing this could cause contamination by mold spores A routine glucose tolerance test (GTT) requires: A.) A blood sample and a urine sample B.) One blood sample C.) One urine sample D.) Two or more blood samples E.) Two or more urine samples - Answers- D.) Two or more blood samples *GTT to detect diabetes. 1. Take baseline blood sample 2. Patient drinks glucose solution 3. Take more blood samples at intervals to see how the patient's body reacts to the glucose. Which of these pipettes is the most accurate? A.) Bulb pipette B.) Graduated pipette C.) Micropipette D.) Pasteur pipette - Answers- C.) Micropipette A TC pipette is: A.) Allow to drain freely B.) Marked with a double ring at the mouthpiece C.) Used for toxic corrosive liquids D.) Emptied forcibly with a safety bulb E.) Rinsed out after delivery - Answers- E.) Rinsed out after delivery

Which gland produces thryoid-stimulating hormone (TSH)? A.) Adrenals B.) Parathyroids C.) Pituitary D.) Testes E.) Thyroid - Answers- C.) Pituitary *Pituitary produces TSH which stimulates the thyroid gland to produce T3 and T4. Which statement about the blood gas test is true? A.) The blood gas test measures the amount of nitrogen in the blood B.) The specimen is an arterial sample C.) The specimen is collected in a plain red top tube D.) The specimen is frozen immediately after collecting E.) The specimen is tested within 24-hours - Answers- B.) The specimen is an arterial sample *It measures the oxygen and carbon dioxide levels in the blood. Stool specimens for O&P should be collected in a jar containing: A.) SAF Fixative B.) A buffer C.) Agar D.) Saline E.) Sodium hypochlorite - Answers- A.) SAF Fixative *SAF = Sodium Acetate-acetic acid-Formalin Identify the false statement regarding 24-hour urine collection. A.) A preservative may be used for some tests B.) Collections during the night are discarded C.) Testing is done in clinical chemistry D.) The first time specimen is discarded E.) The last timed specimen is included - Answers- B.) Collections during the night are discarded Venipuncture is the process of obtaining blood from: A.) Arteries B.) Capillaries C.) Lymph nodes D.) The lungs E.) Veins - Answers- E.) Veins If an article is for the exterior of the body or a natural opening without mucus, it must be: A.) Cooled B.) Disinfected C.) Heated D.) Sterilized

E.) Washed - Answers- B.) Disinfected Which of these is a kidney function test? A.) ALT test B.) Bilirubin test C.) Creatinine clearance test D.) TSH test E.) Troponin T test - Answers- C.) Creatinine clearance test *It checks how well the kidneys can filter out creatinine ** ALT test checks for liver damage *** Bilirubin test checks how well the liver can filter out bilirubin **** TSH test determines if the thyroid gland is functioning properly The sweat test is used to diagnose: A.) Cystic Fibrosis B.) Infection C.) Muscular dystrophy D.) Pneumonia E.) Sarcomas - Answers- A.) Cystic Fibrosis What is the SI unit for reporting red blood cell counts? A.) Number of RBCs per centimetre cubed B.) Number of RBCs per litre C.) Number of RBCs per metre D.) Number of RBCs per metre cubed E.) Number of RBCs per metre squared - Answers- B.) Number of RBCs per litre Which is the preferred specimen for cell count? A.) EDTA Capillary B.) EDTA Venous C.) Heparin Capillary D.) Heparin Venous - Answers- B.) EDTA Venous ______ means nearer to the sacral (lowermost) region of the spinal cord. A.) Caudal B.) Distal C.) Horizontal D.) Lateral E.) Proximal - Answers- A.) Caudal *Caudal = lower; away from head **Distal = away from the trunk/origin ***Horizontal = divides lower and upper ****Lateral = away from midline *****Proximal = toward/nearest to the trunk/origin Which of these can cause occult blood in feces?

A.) A bleeding ulcer B.) Heart disease C.) Hypertension D.) Malignancy of the respiratory tract - Answers- A.) A bleeding ulcer Which medication might cause a patient to bleed excessively from a venipuncture site? A.) A herbal medicine B.) An anticoagulant C.) Birth control pills D.) Insulin E.) Medicine for high cholesterol - Answers- B.) An anticoagulant *Anticoagulant reduces the ability of blood to clot, which causes excessive bleeding Pregnancy test strips detect the presence of which hormone? A.) Adrenocorticotropic Hormone (ACTH) B.) Estrogen C.) Human Chorionic Gonadotropin (hCG) D.) Human Placental Lactogen (hPL) E.) Progesterone - Answers- C.) Human Chorionic Gonadotropin (hCG) Which of these actions during venipuncture may cause a hematoma? A.) Inserting the needle through the vein and puncturing the opposite wall B.) Pressure applied to the puncture site after the needle is removed C.) Removing the tourniquet before the needle is removed D.) Using proper venipuncture technique - Answers- A.) Inserting the needle through the vein and puncturing the opposite wall If a vein feels lumpy or ropey, it is probably: A.) An artery B.) Deep C.) Injured D.) Superficial E.) Tortuous - Answers- E.) Tortuous *This means that the vein have many twists and bends The cubital fossa is also known as the: A.) Antecubital fossa B.) Basilic cubital C.) Basilic vein D.) Median cubital E.) Peroneal vein - Answers- A.) Antecubital fossa Some royal blue top tubes contain ______ as an anticoagulant. A.) Ethylenediaminetetraacetic Acid (EDTA) B.) Lithium Heparin C.) Potassium Oxalate

D.) Sodium Citrate E.) Sodium Heparin - Answers- A.) Ethylenediaminetetraacetic Acid (EDTA) Gray vacutainer tubes contain: A.) Fluoride and EDTA B.) Fluoride and oxalate C.) Sodium heparin and EDTA D.) Sodium heparin and lithium heparin E.) Thrombin - Answers- B.) Fluoride and oxalate