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AAB MT CHEMISTRY EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
Which of the four elements in proteins differentiated this class of
substances from carbohydrates and lipids? ......ANSWER......Nitrogen
Which of the proteins is soluble in water? ......ANSWER......Albumin
How are amino acids joined together to form a chainlike structure?
......ANSWER......Peptide bonding
Proteins may become denatured when subjected to mechanical
agitation, heat, or chemical treatment. What does denaturation of
proteins refer to? ......ANSWER......Alteration of tertiary structure
Which aminoacidopathy is NOT caused by an enzyme deficiency?
......ANSWER......Cystinuria
These aminoacidopathies are caused by an enzyme deficiency:
......ANSWER......Maple syrup disease, phenylketonuria, and
alkaptonuria
How many immunoglobulin classes are currently recognized?
......ANSWER......Five
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Which reagent is employed in the serum protein determination?
......ANSWER......Biuret
Why should hemolyzed serum not be used for total protein analysis?
......ANSWER......Hemoglobin is absorbed at the same wavelength as
protein in the reagent
Which of the following is NOT true of the biuret reaction?
......ANSWER......It is relatively free from interference from lipids and
hemoglobin
Which of the following is true of the biuret reaction?
......ANSWER......Follows Beer's law for a reasonable range of protein,
depends on the presence of at least two peptide linkages, and is
insensitive to the low protein levels of urine.
Why is bromcresol purple the preferred indicator for albumin dye
binding techniques? ......ANSWER......There is less interference from
pigment(s)
What is the most anodic protein on electrophoresis at pH 8.6?
......ANSWER......Albumin
The total protein is 7.1 g/dL. The serum protein results are:
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Albumin 53.0% 3.8 g/dL
Alpha1 3.6% 0.3 g/dL
Alpha2 11.0% 0.8 g/dL
Beta 17.6% 1.2 g/dL
Gamma 14.8% 1.1 g/dL
What is the A/G ratio? ......ANSWER......3.8/(.3+.8+1.2+1.1) = 1.1
A serum protein electrophoretic pattern displaying a beta gamma
bridge or broad gamma is seen in which disease state?
......ANSWER......Active cirrhosis
If an electrophoretic pattern shows 30% albumin, 4%-10% alpha-
globulin, 4%-10% beta-globulin, and 45% gamma globulin, then what
condition may exist in the patient? ......ANSWER......Monoclonal
gammopathy
Glycoproteins and mucoproteins are usually bound to which substance?
......ANSWER......Carbohydrates
All of the following are glycoproteins: ......ANSWER......Ceruloplasmin,
follicle-stimulating hormone (FSH), and fibrinogen
All of the following are glycoproteins EXCEPT:
......ANSWER......Cryoglobulin
AAB MT CHEMISTRY EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
Which of the four elements in proteins differentiated this class of
substances from carbohydrates and lipids? ......ANSWER......Nitrogen
Which of the proteins is soluble in water? ......ANSWER......Albumin
How are amino acids joined together to form a chainlike structure?
......ANSWER......Peptide bonding
Proteins may become denatured when subjected to mechanical
agitation, heat, or chemical treatment. What does denaturation of
proteins refer to? ......ANSWER......Alteration of tertiary structure
Which aminoacidopathy is NOT caused by an enzyme deficiency?
......ANSWER......Cystinuria
These aminoacidopathies are caused by an enzyme deficiency:
......ANSWER......Maple syrup disease, phenylketonuria, and
alkaptonuria
How many immunoglobulin classes are currently recognized?
......ANSWER......Five
,2|Page
Which reagent is employed in the serum protein determination?
......ANSWER......Biuret
Why should hemolyzed serum not be used for total protein analysis?
......ANSWER......Hemoglobin is absorbed at the same wavelength as
protein in the reagent
Which of the following is NOT true of the biuret reaction?
......ANSWER......It is relatively free from interference from lipids and
hemoglobin
Which of the following is true of the biuret reaction?
......ANSWER......Follows Beer's law for a reasonable range of protein,
depends on the presence of at least two peptide linkages, and is
insensitive to the low protein levels of urine.
Why is bromcresol purple the preferred indicator for albumin dye
binding techniques? ......ANSWER......There is less interference from
pigment(s)
What is the most anodic protein on electrophoresis at pH 8.6?
......ANSWER......Albumin
The total protein is 7.1 g/dL. The serum protein results are:
, 3|Page
Albumin 53.0% 3.8 g/dL
Alpha1 3.6% 0.3 g/dL
Alpha2 11.0% 0.8 g/dL
Beta 17.6% 1.2 g/dL
Gamma 14.8% 1.1 g/dL
What is the A/G ratio? ......ANSWER......3.8/(.3+.8+1.2+1.1) = 1.1
A serum protein electrophoretic pattern displaying a beta gamma
bridge or broad gamma is seen in which disease state?
......ANSWER......Active cirrhosis
If an electrophoretic pattern shows 30% albumin, 4%-10% alpha-
globulin, 4%-10% beta-globulin, and 45% gamma globulin, then what
condition may exist in the patient? ......ANSWER......Monoclonal
gammopathy
Glycoproteins and mucoproteins are usually bound to which substance?
......ANSWER......Carbohydrates
All of the following are glycoproteins: ......ANSWER......Ceruloplasmin,
follicle-stimulating hormone (FSH), and fibrinogen
All of the following are glycoproteins EXCEPT:
......ANSWER......Cryoglobulin
