Which lipoprotein particles contain “good” and “bad” cholesterol, and why are these terms used?

A 45-year-old man without a history of bleeding or excessive bruising dies suddenly due to rupture of an aortic dissection. Genetic analysis at autopsy shows a defect in the gene for fibrillin. Which of the following events most likely occurs with defective fibrillin? (A) Elastic fibers in the extracellular matrix are not correctly formed (B) Hyaluronic acid in proteoglycans is not sulfated on the proper hydroxyl residues (C) Intermediate filaments are not assembled in endothelial cells (D) Shorter side chains of chondroitin sulfate are present on the proteoglycans (E) Tubulin is not polymerized correctly due to the lack of GTP in endothelial cells

How does cholesterol transport into human cells?

A) illustrate in molecular detail how hemoglobin's reduced oxygen affinity is caused by protonation of the histidine side chain. b) what is the pKa of the histidine side-chain ionizable group expected to have?|