Question

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115- A membrane phospholipid that does NOT contain glycerol is: A. lecithitn B sphingomyelin. cerebroside D. cardiolipin. E. ceramide. 116- Which of the following statements are FALSE with respect to the prognosis and complications of familial hypercholesterolemia? a) The outcome is likely to be poor in people with the homozygote type of familial hypercholesterolemia because it causes early heart attacks and is resistant to treatment. b)Heart attacks may occur at an early age in patients c) The disease is associate with cholesterol-rich deposits in skin, eyelids d) In families with a history of familial hypercholesterolemia, genetic counseling may be of benefit, especially if both parents are affected. e) none of the above 117-Preventive antioxidants include a) catalase ) peroxidases that react with ROOH chelators of metal ions such as DTPA (diethylenetriaminepentaacetate d) EDTA (ethylenedi amine-tetraacetate). e) all of the above 118 Which one of the following characteristics correctly describes prostaglandins? A They are derived from fatty acids with 22 carbons B They are linear compounds with no ring structures C They do not contain keto or hydroxy groups D They are synthesized from polyunsaturated fatty acids 9 Aspirin is used to reduce inflammation. Its mechanism of action includes a, competition with polypeptidc hormoncs for reccptors in the brain. acetylation of prostaglandin synthase. c. conversion of salicylate to acetylsalicylate. d. inhibition of the oxygenase activity of prostaglandin synthase. 120 Which of these lipids are particularly important cell membrane constituents in the nervous system? a) gangliosides cerebrosides c) shingomyelins d) all of the above e) a and c only