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Tietz Fundamentals of Clinical Chemistry and Molecular Diagnostics, 8th Edition by Nader Rifai, $17.99   Add to cart

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Tietz Fundamentals of Clinical Chemistry and Molecular Diagnostics, 8th Edition by Nader Rifai,

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Tietz Fundamentals of Clinical Chemistry and Molecular Diagnostics, 8th Edition by Nader Rifai,

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  • September 10, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
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TEST BANK For Tietz Fundamentals of Clinical Chemistry and
Molecular Diagnostics, 8th Edition by Nader Rifai,
amino acid - ANSWER:an organic compound that contains an amino group (-NH2)
and a carboxyl group(-COOH)

List the essential amino acids - ANSWER:Phenylalanine
Valine
Threonine
Tryptophan
Isoleucine
Methionine
Arginine
Leucine
Lysine

Primary aminoaciduria - ANSWER:inherited enzyme defect (inborn error of
metabolism) or genetic diseases that leads to the absence of a single amino acid

secondary aminoaciduria - ANSWER:due to disease or damage of an organ such as
liver or generalized renal tubular dysfunction or protein-energy malnutrition

Methods used to analyze AA - ANSWER:1. ion exchange chromatography/ninhydrin
system
2. LC-MS/MS
3. reversed-phase HPLC
4. capillary electrophoresis (CE)
5. GC

peptide bond - ANSWER:The covalent bond or link formed by a condensation
reaction between the amino group or one amino acid with the carboxyl group of
another to form an amide linkage

Quantitative analysis of proteins includes - ANSWER:1. physical methods
2. activity measurements
3. immunoassays

Qualitative analysis of proteins includes - ANSWER:1. electrophoresis
2. chromatography
3. genetic analysis
4. functional assays
5. mass spectrometry

Methods for measuring TP in fluids - ANSWER:1. Kjeldahl
2. biuret

, 3. direct spectrophotometric
4. Folin-Ciocalteu (Lowry)
5. dye-binding
6. refractometric
7. turbidimetric

Kjeldahl method - ANSWER:sample digested with acid to convert nitrogen in protein
to ammonium ion that is measured; reproducible, but inconvenient, time-
consuming, impractical

Biuret Method - ANSWER:Cu2+ complexes with peptide bonds in alkaline conditions
causing a shift in color from blue to violet; moderate sensitivity; slightly affected by
icterus and lipemia

Direct Photometric Methods - ANSWER:absorbance of ultraviolet light at 200-225
nm (tyrosine and tryptophan) and 270-290 nm (peptide bonds)

Dye Binding Method - ANSWER:shifts in absorbance spectra of dyes when bound to
proteins; good sensitivity and low interference from small compounds

Pyrogallol Red - ANSWER:used for the analysis of protein in dilute fluids such as urine
and CSF

Refractometry - ANSWER:measurement of of refractive index; not normally used for
TP determination

Turbidimetric method - ANSWER:measures changes in absorbance caused by
aggregated protein

Nephelometric method - ANSWER:measures light reflected at an angle by
aggregated protein

Common reagents used in tubidmetric methods - ANSWER:1. tricholoroacetic acid
2. SSA
3. SSA with sodium sulfate
4. benzethonium chloride
5. benzalkonium salts

Turbidimetric and nephelometric assay can be - ANSWER:end point or kinetic
reactions

Three dyes used to stain protein in serum protein electrophoresis - ANSWER:1.
amido black
2. Ponceau S
3. Coomassie brilliant blue

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