Chemistry Pt 1

1.

1 point

The regulation of calcium and phosphorous metabolism is accomplished by which of the following glands?

thyroid

parathyroid

adrenal glands

pituitary

2.

1 point

A patient has the following test results:

-increased serum calcium levels
-decreased serum phosphate levels
-increased levels of parathyroid hormone

The patient most likely has:

hyperparathyroidism

hypoparathyroidism

nephrosis

steatorrhea

3.

1 point

The glycated hemoglobin value represents the integrated values of glucose concentration during the preceding:

1-3 weeks

6-8 weeks

4-5 weeks

16-20 weeks

4.

1 point

A potassium level of 6.8 mEq/L (6.8 mmol/L) is obtained. Before reporting the results, the first step the technologist should take is to:

do nothing, simply report out the result

check the age of the patient

check the serum for hemolysis

rerun the test

5.

1 point

Increased serum albumin concentrations are seen in which of the following conditions?

nephrotic syndrome

acute hepatitis

chronic inflammation

dehydration

6.

1 point

The celluse acetate electrophoreses at pH 8.6 of serum proteins will show an order of migration beginning with the fastest migration as follows:

albumin, alpha-1 globulin, alpha-2 globulin, beta globulin, gamma globulin

alpha-1 globulin, alpha-2 globulin, beta globulin, gamma globulin, albumin

albumin, alpha-2 globulin, alpha-1 globulin, beta globulin, gamma globulin

gamma globulin, beta globulin, alpha-2 globulin, alpha-1 globulin, albumin

7.

1 point

In addition to carcinoma of the prostate, elevated prostate-specific antigen (PSA) can occur due to:

benign prostatic hyperplasia

exogenous steroid use

statin therapy (cholesterol lowering drug)

aspirin therapy

8.

1 point

The solute that contributes the most to the total serum osmolality is:

sodium

chloride

urea

glucose

9.

1 point

Decreased serum iron associated with increased TIBC is compatible with which of the following disease states?

nephrosis

chronic liver disease

iron deficiency anemia

anemia of chronic infection

10.

1 point

The anion gap is useful for quality control of laboratory results for:

amino acids and proteins

sodium, potassium, chloride and total CO2

calcium, phosphorus and magnesium

blood gas analyses

11.

1 point

The presence of C-reactive protein in the blood is an indication of:

a recent streptococcal infection

an inflammatory process

a recovery from a pneumococcal infection

a state of hypersensitivity

12.

1 point

At blood pH 7.40, what is the ratio of bicarbonate to carbonic acid?

15:1

25:1

20:1

30:1

13.

1 point

90% of the copper present in blood is bound to:

albumin

transferrin

ceruloplasmin

cryoglobulin

14.

1 point

A patient with hemolytic anemia will:

show a decrease in glycated Hgb value

demonstrate an elevated Hgb A1

show little or no change in glycated Hgb value

show an increase in glycated Hgb value

15.

1 point

The reference range for the pH of arterial blood measured at 37C is:

7.33-7.37

7.28-7.34

7.45-7.50

7.35-7.45

16.

1 point

Which percentage of total serum calcium is nondiffusable protein bound?

80-90%

51-60%

40-50%

10-30%

17.

1 point

Which of the following enzymes are used in the diagnosis of acute pancreatitis?

amylase and lipase

aspartate aminotransferase (AST) and lactate dehydrogenase (LD)

aspartate aminotransferase (AST) and alanine aminotransferase (ALT)

5'-nucleotidase and gamma-glutamyl transferase (GGT)

18.

1 point

Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in which of the following diseases?

infectious mononucleosis

muscular dystrophy

viral hepatitis

pulmonary emoli

19.

1 point

Calcium concentration in the serum is regulated by:

insulin

parathyroid hormone

thyroxine

vitamin C

20.

1 point

In respiratory acidosis, a compensatory mechanism is the increase in:

blood PCO2

plasma bicarbonate concentration

respiration rate

ammonia formation

21.

1 point

Which of the following electrolytes is the chief plasma cation whose main function is maintaining osmotic pressure?

potassium

sodium

chloride

calcium

22.

1 point

Total iron-binding capacity measures the serum iron transporting capacity of:

hemoglobin

ceruloplasmin

transferrin

ferritin

23.

1 point

Which one of the following values obtained during a glucose tolerance test are diagnostic of diabetes mellitus?

fasting plasma glucose = 110 mg/dL (6.1 mmol/L)

fasting plasma glucose = 126 mg/dL (6.9 mmol/L)

2-hour specimen = 150 mg/dL (8.3 mmol/L)

2-hour specimen = 180 mg/dL (9.9 mmol/L)

24.

1 point

The direction in which albumin migrates (ie, toward anode or cathode) during electrophoretic separation of proteins, at pH 8.6, is determined by:

the ionization of the amine groups, yielding a net positive charge

the ionization of the carboxyl groups, yielding a net negative charge

albumin acting as a zwitterion

the density of the gel layer