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AAB MT Chemistry questions and answers

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AAB MT Chemistry questions and answers

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  • June 23, 2024
  • 12
  • 2023/2024
  • Exam (elaborations)
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AAB MT Chemistry
Which of the four elements in proteins differentiates this class of substances from
carbohydrates and lipids?
Nitrogen


Which of the proteins is soluble in water?
Albumin


How are amino acids joined together to form a chainlike structure?
Peptide bonding


Amino acid sequence of a protein represent which level of protein structure?
Primary structure


The alpha helix and beta pleated sheet represent which level of protein structure?
Secondary structure


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The 3D structure of a protein represent which level of protein structure?
Tertiary structure


2 or more polypeptide chains represent which level of protein structure?
Quaternary structure


Protein classification that contains peptide chains only
Simple proteins


Protein classification that contains a protein and a prosthetic group (Lipoproteins,
Glycoproteins, Mucoproteins, Nucleoproteins)
Conjugated proteins


Protein classification for proteins that come off of an electrophoreisis
Plasma proteins

, Proteins may become denatured when subjected to mechanical agitation, heat, or chemical
treatment. What does denaturation of proteins refer to?
Alteration in tertiary structure


How many immunoglobulin classes are currently recognized? What are the
immunoglobulins?
5

- IgG
- IgA
- IgM
- IgE
- IgD


Glycoproteins and Mucoproteins are usually bound to which substance?
Carbohydrates


Which reagent is employed in the serum protein determination? This is the most common
method used for measurement of total proteins
Biuret


What are the different ways measure total proteins
- Kjeldahl
- Refractometry
- Biuret
- Dye binding


The measurement of nitrogen content in total proteins
Kjeldahl


The measurement of refractive index for total proteins
Refractometry


Different dyes used in the dye binding method for measurement of total proteins
- Bromphenol blue
- Ponceau S
- Amido black
- Coomassie brilliant blue


Largest fraction of proteins and first peak that comes off of the electrophoresis.

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