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PRE-TEST PERC Flashcards

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1
Q

These hormones circulate in plasma, reversibly bound to a carrier protein.

a. Amino acid derivative hormones
b. Steroid hormones
c. Protein hormones
d. Glycoprotein hormones

A

Steroid hormones

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2
Q

Which of the following part of spectrophotometer isolates the wavelength of interest?

a. Photodetector
b. Sample cell
c. Tungsten n lamp
d. Monochromator

A

.

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3
Q

The purpose of caffeine sodium benzoate in the measurement of bilirubin:

a. Color reagent
b. Buffer
c. Accelerator
d. Substrate

A

Accelerator

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4
Q

Every 10% contamination with 5% dextrose will increase glucose in a blood sample by ______ mg/dl

a. 100 mg/dl
b. 50 mg/dl
c. 500 mg/dl
d. 300 mg/dl

A

.

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5
Q

Which instrument requires a primary and secondary monochromator?

a. Spectrophotometer
b. Atomic absorption spectrophotometer
c. Fluorometer
d. Nephelometer

A

.

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6
Q

Which of the following describe the signs and symptoms of blood alcohol level 0.27-0.40?

a. No obvious impairment, some changes observable on performance testing
b. Mild euphoria with decrease inhibitions
c. Loss of critical judgment, memory impairment
d. Unable to stand or walk vomiting, impaired conciousness

A

.

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7
Q

Hypersecretion of growth hormone may lead to:

a. Dwarfism
b. Acromegaly
c. Hypothyroidism
d. Pancreatitiss

A

Acromegaly

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8
Q

What is the purpose of the holmium oxide glass filter?

A. To assess wavelength accuracy
B. To validate linearity of the photodetector
C. To prevent stray light
D. To check absorbance accuracy

A

.

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9
Q

Which element is reduced at the cathode of a Clark polarographic electrode?

A. Silver
B. Oxygen
C. Chloride
D. Potassium

A

.

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10
Q

This enzyme which affects the cell membrane and microsomal fractions of the liver, is a sensitive indicator of occult alcoholism?

A. ALP
B. AST
C. GGT
D. ALT

A

GGT

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11
Q

Interference in atomic absorption spectrophotometry caused by differences in viscosity is called:

A. Absorption interference
B. Matrix effect
C. Ionization interference
D. Quenching

A

.

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12
Q

17-ketosteroids are measured using what colorimetric reaction?

A. Porter-Silber method
B. Pisano method
C. Kober method
D. Zimmermann

A

Zimmermann

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13
Q

Statement 1: Highest elevation in Creatine kinase is seen in Duchenne syndrome.

Statement 2: Highest elevation in elevation of lactate dehydrogenase is seen in cases of pernicious anemia.

A. 1st statement is true. 2nd is false.
B. 2nd statement is true. 1st is false.
C. Both statements are true.
D. Both statements are false

A

.

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14
Q

A shift in the mean value indicates an error concerning:

A. Precision
B. Accuracy
C. Detection limit
D. Specificity

A

Accuracy

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15
Q

Select the hormones that are derived from cholesterol

  1. aldosterone
  2. Insulin
  3. Calcitonin
  4. Testosterone
  5. Cortisol
  6. T4

A. 1,4,5
B. 1 ,2,3,5
C. 1,3,5
D. 1,4,5,6

A

1,4,5

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16
Q

Select the enzyme that is most specific for B-D-glucose.

A. Hexokinase
B. G-6-PD
C. Phosphohexisomerase
D. Glucose oxidase

A

.

17
Q

High serum total protein but low albumin is usually seen in:

A. Multiple myeloma
B. Hepatic cirrhosis
C. Glomerulonephritis
D. Nephrotic syndrome

A

Multiple myeloma

18
Q

In Westgard multirule, what is the meaning of R₄s ?

A. The control values exceed 4s due to systematic errors
B. The difference between the upper and lower limit exceeds 4 due to random error
C. The difference between the upper and lower limit exceeds 4s due to systematic error
D. The control values exceed 4s due to random error

A

The difference between the upper and lower limit exceeds 4 due to random error

19
Q

Inverse colorimetry is involved in what glucose determination method?

A. Hagedorn Jensen
B. Folin Wu
C. Nelson Somogyi
D. Neocuproine

A

.

20
Q

Glucosuria among diabetic patients occurs if:

A. The plasma glucose level is > 126 mg/dl
B. The plasma glucose level exceeds 180 mg/dl
C. The plasma glucose level is > 126 mg/dL, an indication of DM
D. Any of the above mentioned statement is correct

A

.

21
Q

Compute the LDL-cholesterol given the following data:

Triglyceride= 65 mg/dl
Total Cholesterol= 205mg/dl
HDL= 45 mg/dl

A. 85 mg/dl
B. 131 mg/dl
C. 147 mg/dl
D. 139 mg/dl

A

.

22
Q

Determine the equivalent weight of 65g sulfuric acid:

H =1 S=32 O=16

A. 98
B. 58
C. 49
D. 24.5

A

49

23
Q

In erythroblastosis fetalis, which form of bilirubin is elevated in plasma?

A. Conjugated bilirubin
B. Delta bilirubin
C. Unconjugated bilirubin
D. Both A & C

A

.

24
Q

Which among the isoenzymes of LDH is the most abundant and heat-stable?

A. LD-1
B. LD-2
C. LD-3
D. LD-4

A

.

25
Q

Which of the following electrodes is based on the principle of amperometric measurement?

A. pCO2 electrode
B. pO2 electrode
C. pH electrode
D. Ionized Calcium electrode

A

.

CHEM (5 decks)

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