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College Macromolecules Questions

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College Macromolecules
Which one of the following is not correct about biosynthesis of fatty acids?
  1. Condensing enzyme catalyzes the synthesis of acetoacetyl-ACP by combining two units of acetyl CoA.
  2. NADPH is electron donor.
  3. ACP is acyl group carrier.
  4. It occurs in the cytosol.
College Macromolecules
What forms once B2 microglobulin binds the MHC class 1 protein releasing calnexin forming?
  1. Peptide-Loading Complex
  2. Enzymes
  3. MHC Class
  4. CD8
College Macromolecules
What happens when TCR(Alpha and Beta) proteins pair in the endoplasmic reticulum of the cell to form Alpha/Beta TCR?
  1. The pairing of different (alpha and beta) chains provides a third source of diversity that occurs before encounter with antigen
  2. TCRs do not undergo somatic hypermutation
  3. TCRs do not undergo a process analogous to class switching
  4. All of The Above
College Macromolecules
Two examples of coenzymes are                       and                      .
  1. copper and iron
  2. zinc and lead
  3. folic acid and NAD+
  4. folic acid and copper
College Macromolecules
Which of the following is correct about the uptake process of LDL in the cell?
  1. Apo C is recognized by LDL receptors.
  2. The uptake of LDL is done by exocytosis.
  3. If there is an abnormality in the LDL receptors, LDL cannot be uptake into the cell.
  4. The LDL receptors make it possible for the liver to absorb cholesterol from LDL.
  5. Both C & D
College Macromolecules
Which of the following lipoproteins do transport endogenous fat from hepatic tissue to non-hepatic tissues?
  1. HDL and chylomicron
  2. VLDL and chylomicron
  3. LDL and VLDL
  4. HDL and LDL
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