MT AAB CHEMISTRY EXAM TEST WITH LATEST
UPDATED (QUESTIONS AND ANSWERS) GET IT
RIGHT| Already passed!!
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
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:
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
Which one of the following applies to cryoglobulins? - (ANSWER)They are
temperature-sensitive proteins
Which of the following statements is true of albumin? - (ANSWER)It is produced
in the liver and is water-soluble
UPDATED (QUESTIONS AND ANSWERS) GET IT
RIGHT| Already passed!!
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
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:
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
Which one of the following applies to cryoglobulins? - (ANSWER)They are
temperature-sensitive proteins
Which of the following statements is true of albumin? - (ANSWER)It is produced
in the liver and is water-soluble
