proteins chem section

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Questions and Answers

Which protein is a negative acute phase reactant?

  • Amyloid P component
  • Haptoglobin (correct)
  • Fibrinogen
  • CRP

Which protein is involved in defense or protective function?

  • CRP (correct)
  • Fibrinogen
  • Prothrombin
  • von Willebrand factor

Which protein is a positive acute phase reactant?

  • Albumin
  • Transthyretin (correct)
  • Hemoconcentration
  • Transferrin

What is the main cause of hyperproteinemia?

<p>Increased γ-globulin (A)</p> Signup and view all the answers

Which immunoglobulin is associated with long-term immunity?

<p>IgG (B)</p> Signup and view all the answers

Which immunoglobulin is the first to be produced in an immune response?

<p>IgM (D)</p> Signup and view all the answers

Which immunoglobulin is associated with Type I hypersensitivities?

<p>IgE (B)</p> Signup and view all the answers

Which immunoglobulin is found on the surface of mature B lymphocytes?

<p>IgD (A)</p> Signup and view all the answers

What is the rate-limiting step of bilirubin metabolism?

<p>Excretion of bile (D)</p> Signup and view all the answers

Which of the following is true about enzymes?

<p>Enzymes speed up reactions by increasing substrate specificity. (B)</p> Signup and view all the answers

What is the optimal temperature for enzyme activity?

<p>37°C (A)</p> Signup and view all the answers

Which protein is synthesized by the fetal yolk sac and parenchymal cells of the fetal liver?

<p>α1-FETOPROTEIN (AFP) (D)</p> Signup and view all the answers

What is the function of Haptoglobin?

<p>Bind free Hb to prevent loss of Hb via urine (B)</p> Signup and view all the answers

Which protein is a precursor to angiotensin I?

<p>Angiotensinogen (D)</p> Signup and view all the answers

Which protein is an acute phase reactant and increases in inflammatory conditions?

<p>Ceruloplasmin (B)</p> Signup and view all the answers

Which enzyme catalyzes the transamination reactions of amino acids?

<p>Alanine aminotransferase (ALT) (A)</p> Signup and view all the answers

Which enzyme is associated with damaged hepatobiliary cells?

<p>Aspartate aminotransferase (AST) (D)</p> Signup and view all the answers

Which enzyme is associated with hepatocellular and obstructive disorders?

<p>γ-glutamyl transferase (GGT)**GSH/GSSG, Glutathione (C)</p> Signup and view all the answers

Which enzyme is responsible for the reversible phosphorylation of Creatine?

<p>Creatine Kinase (CK/CPK) (B)</p> Signup and view all the answers

Which enzyme is unstable in serum due to oxidation of its active site?

<p>Creatine Kinase (CK/CPK) (B)</p> Signup and view all the answers

Which enzyme has the highest activity in muscle tissue?

<p>Creatine Kinase (CK/CPK) (B)</p> Signup and view all the answers

Which enzyme is responsible for the reversible reaction of pyruvate to lactate?

<p>Lactate Dehydrogenase (LD/LDH) (B)</p> Signup and view all the answers

Which enzyme is recommended to be measured by monitoring NADH at 340 nm?

<p>Lactate Dehydrogenase (LD/LDH) (A)</p> Signup and view all the answers

Where does the absorption of amino acids (aa) primarily occur in the digestive system?

<p>Jejunum (C)</p> Signup and view all the answers

What is the normal range of total protein in the serum?

<p>Approximately 6.5-8.3 g/dl (A)</p> Signup and view all the answers

What is the main protein responsible for filtering and reabsorption in the kidneys?

<p>Uromodulin (A)</p> Signup and view all the answers

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