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Question 1

Which disorder causes neonates to demonstrate the presence of Bart’s hemoglobin that changes to beta-chain tetramers is adults?

Answer 1

Hemoglobin H disease

Question 2

What common agars will Pasteurella sp. grow on?

Answer 2

SBA and chocolate agar

Question 3

What is the anion gap formula?

Answer 3

anion gap = sodium - (chloride + bicarbonate)

Question 4

What is the LDL formula?

Answer 4

LDL = total cholesterol - [HDL + (triglycerides/5)]

Question 5

What is contact dermatitis mediated by?

Answer 5

T lymphocytes

Question 6

What are the two general categories of nucleic acid amplification (NAA) techniques?

Answer 6

target amplification and signal amplification

Question 7

What three factors contribute to Staph. aureus pathogenicity?

Answer 7

exfoliative and enterotoxins; natural colonization/resevoir; hyaluronidase

Question 8

A decrease in what kind of cells in and AIDS patient results in an increase in susceptibility to infection?

Answer 8

CD 4+ cells

Question 9

What lipid test is least affected by a patient’s fasting status?

Answer 9

cholesterol

Question 10

Anti-factor VII inhibitor may cause what kind of hemophilia?

Answer 10

acquired hemophilia A

Question 11

Which RBC parameter is not decreased in beta-thalassemia major?

Answer 11

RDW

Question 12

What is the preferred solution for general disinfection of work surfaces in the lab?

Answer 12

10% sodium hypochlorite

Question 13

What is the formula for absolute cell count?

Answer 13

abs. count = total count x % of cells counted

Question 14

What is the formula for creatinine clearance?

Answer 14

creatinine clearance (mL/min) = (urine creat./serum creat.) x [urine vol. in mL/(time in hrs. x 60)]

Question 15

What is the purpose of adventitial cells?

Answer 15

provide support for developing hematopoietic cells

Question 16

What percentage of adipose cells make up the volume of bone marrow in the average adult?

Answer 16

approximately 50%

Question 17

What kind of immunochemical electrophoresis uses antisera and quantitates an unknown antigen?

Answer 17

electroimmunoassay electrophoresis

Question 18

Markedly increased 5-hydroxyindole acetic acid (5-HIAA) determination is presumptive evidence for what?

Answer 18

carcinoid tumor

Question 19

Hepatocellular carcinoma, viral hepatitis, testicular tumors, and pancreatic cancer are all associated with increased levels of what?

Answer 19

AFP (alpha-fetoprotein)

Question 20

What two tests can help confirm a suspected Cryptococcus sp.?

Answer 20

strong urease and phenoloxidase activity

Question 21

What vitamin deficiency causes night blindness?

Answer 21

vitamin A

Question 22

What vitamin deficiency causes beriberi?

Answer 22

thiamine

Question 23

What vitamin deficiency causes rickets?

Answer 23

vitamin D

Question 24

What vitamin deficiency causes scurvy?

Answer 24

vitamin C

Question 25

What is the formula for a WBC count from a hemocytometer?

Answer 25

WBC count = (dilution factor x # cells counted x 10) / (# mm2 area counted)