Plasma lipoproteins are comprised of which of the following components? Apolipop
ID: 97156 • Letter: P
Question
Plasma lipoproteins are comprised of which of the following components? Apolipoproteins Cholesterol and cholesteryl esters Triacylglycerols Phospholipids All of the above Presynthetic error control by DNA polymerase III is based on: removal of mismatched base pairs by the 3' rightarrow 5' exonuclease activity. structure of the catalytic site preferentially selecting tautomeric base nucleotides for synthesis of DNA. rapid reversion of tautomeric bases to the normal conformation. structure of the DNA synthesis catalytic site excluding non-Watson and Crick base pairs removal of mismatched base pairs by the 5' rightarrow 3' exonuclease activity.Explanation / Answer
20.All the above
They have a single-layer phospholipid and cholesterol outer shell, with the hydrophilic portions oriented outward toward the surrounding water and lipophilic portions of each molecule oriented inwards toward the lipids molecules within the particles. Apolipoproteins are embedded in the membrane, both stabilising the complex and giving it functional identity determining its fate. Thus the complex serves to emulsify the fats.
21.removal of mismatched base pairs by the 5`- 3` exonuclease activity.
When an incorrect base pair is recognized, DNA polymerase moves backwards by one base pair of DNA. The 3'-5' exonuclease activity of the enzyme allows the incorrect base pair to be excised (this activity is known as proofreading).