Chemistry Flashcards
General Chemistry #8
Which of these 2-hour postprandrial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus?
* 160 mg/dL
* 170 mg/dL
* 180 mg/dL
* 200 mg/dL
200 mg/dL
General Chemistry #13
The conversion of glucose or other hexoses into lactate or pyruvate is called:
* Glycogenesis
* Glycogenolysis
* Gluconeogenesis
* Glycolysis
Glycolysis
General Chemistry #17
Total glycosylated hemoglobin levels in a hemosylate reflect the:
* Average blood glucose levels of the past 2-3 months
* Average blood glucose levels for the past week
* Blood glucose level at the time the sample is drawn
* HbA1c level at the time the sample is drawn
Average blood glucose levels of the past 2-3 months
General Chemistry #29
In spectrophotometric determination, which of the following is the formula for calculating the absorbance of a solution?
* (absorptivity x light path)/concentration
* (absorptivity x concentration)/light path
* absorptivity x light path x concentration
* (light path x concentration)/absorptivity
absorptivity x light path x concentration
Beer-Lambert Equation: A= εbc
General Chemistry #25
The different water content of erythrocytes and plasma makes true glucose concentration in whole blood a function of the:
* Hematocrit
* Leukocyte count
* Erythrocyte count
* Erythrocyte indices
Hematocrit
General Chemistry #33
In the hexokinase method for glucose determination, the actual end product measured is the:
* Amount of hydrogen peroxide produced
* NADH produced from the reduction of NAD
* Amount of glucose combined with bromocresol purple
* Condensation of a glucose with an aromatic amine
NADH produced from the reduction of NAD
General Chemistry #46
A 9-month-old boy from Israel has gradually lost the ability to sit up, and develops seizures. He has an increased amount of a phospholipid called GM2 ganglioside in his neurons, and he lacks the enzyme hexosaminidase A in his leukocytes. These findings suggest:
* Niemann-Pick disease
* Tay-Sachs disease
* phenylketouria
* Hurler syndrome
Tay-Sachs disease
General Chemistry #47
Apolipoprotein A1 is the major component of which lipoprotein?
* Chylomicrons
* HDL
* LDL
* VLDL
HDL
General Chemistry #57
The substance that is measured to estimate the serum concentration of triglycerides by most methods is:
* Phospholipids
* Glycerol
* Fatty acids
* Pre-beta lipoprotein
Glycerol
General Chemistry #60
The principle of the occult blood test depends on the:
* Coagulase ability of blood
* Oxidative power of atmospheric oxygen
* Hydrogen peroxide in hemoglobin
* Peroxidase-like activity of hemoglobin
Peroxidase-like activity of hemoglobin
