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FNDH 620 Exam 2 (2022) COMPLETE SOLUTIONS

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FNDH 620 Exam 2 (2022) COMPLETE SOLUTIONS What are the most prevalent saturated fatty acids in average US diet? A. palmitic and stearic acid B. oleic and linoleic C. linoleic and linolenic D. acetic and butyric - ✔✔Palmitic and stearic acid What is formed when fatty acids are oxidized in the mitochondria? A. glycerol; B. pyruvate; C. triacylglyceride; D. acetyl CoA; - ✔✔Acetyl CoA What is the normal product of the fatty acid synthase? A. Triacylglyceride; B. Palmitate; C.n-3 fatty acid; D.n-6 fatty acid; - ✔✔Palmitate Which fatty acid is considered essential and must be supplied by the diet? A. a-linolenic acid; B. Linoleic acid; C. y-linolenic acid; D.Arachidonic acid; E. A and B. - ✔✔A and B Humans build about ____mg of cholesterol each day. A. 100 B. 300 C. 700 D. 2000 - ✔✔700 Cholesterol is the precursor of the following except: A. Estrogens and androgens; B. Glucocorticoids; C. Bile acids; D. Vitamin D; E. Phospholipids. - ✔✔Phospholipids What is the most active site of lipid digestion? A. stomach B. duodenum C. upper jejunum D. ileum - ✔✔Upper jejunum The main function of lipoproteins is A. To facilitate lipid digestion; B. To protect against CVD; C. To act as the carrier of lipids; D. To provide energy; E. All of the above. - ✔✔To act as the carrier of lipids The main component of a HDL molecule is protein. A. True B. False - ✔✔True LDL-cholesterol is often termed "bad cholesterol" because it has been linked to atherogenic fatty plaque formation A. True B. False - ✔✔True Trans unsaturated fatty acids are now considered more atherogenic than saturated fatty acids because they A. are unnatural and only formed during fat processing; B. cause excess blood clotting; C. elevate serum LDL while decreasing HDL; D. are saturated completely. - ✔✔Elevate serum LDL while decreasing HDL The mechanism of action of Orlistat is A. To inhibit pancreatic lipase activity; B. To destroy bile acids in the small intestine; C. To decrease appetite; D. None of the above; E. All of the above. - ✔✔To inhibit pancreatic lipase activity Which hormone is considered to be an antagonist of lipolysis? A. insulin B. epinephrine C. glucagon D. Adrenocorticotropic hormone E. None of the above. - ✔✔Insulin Excessive ketone bodies may be accumulated due to reduced supply of cellular glucose and a concomitant _____ in fatty acid oxidation. A. increase; B. decrease; C. no change. - ✔✔Increase What is the legally intoxicated amount of alcohol in bloodstream? A. Less than 10 mg%; B. 11-24 mg%; C. 25-45 mg%; D. 50-100 mg%; E. None of the above. - ✔✔50-100 mg% About ______ of the dry weight of a typical human cell is protein. A. one-tenth B. one-fifth C. one-third D. one-half - ✔✔One-half Enzymes: A. decrease the free energy change of a reaction; B. increase the activation energy of a reaction; C. decrease transition energy; D. increase the equilibrium constant of a reaction; E. None of the above. - ✔✔Decrease transition energy Which of the following statements concerning collagen is not true? A. Collagen is a major connective tissue protein; B. Collagen is made up of tropocollagen; C. Tropocollagen consists of three peptide chains that are cross-linked triple helix; D. Collagen has a large amount of gly

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