Chapter 15: Problem 9
Name the five steroid hormones derived from cholesterol and briefly describe their metabolic functions in humans.
Chapter 15: Problem 9
Name the five steroid hormones derived from cholesterol and briefly describe their metabolic functions in humans.
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Get started for freeWhat are the three major roles of lipids in biology? Provide examples of the lipids in these roles.
What are the molecular formulas for the following saturated and unsaturated fatty acids: \(\operatorname{cis} 18: 1\left(\Delta^{9}\right), 18: 0,\) cis \(16: 1\left(\Delta^{9}\right), 16: 0,\) cis \(18: 2\left(\Delta^{9,12}\right),\) and trans \(18: 1\left(\Delta^{9}\right) ?\) What are the common names of these fatty acids at \(\mathrm{pH} 3.0\) and at physiologic pH \(7.2 ?\)
Name two glycerophospholipids found in eukaryotic cell membranes and two sphingolipids. What fraction of the lipid in most plasma membranes is cholesterol, and how does cholesterol content affect membrane fluidity?
What is the precursor biomolecule of all sphingolipids, and what polar head group is attached to this precursor to form the abundant membrane lipid sphingomyelin?
What is the physiologic difference between a drug that functions as a steroid agonist and one that functions as a steroid antagonist? Give a specific example of each type of drug.
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