HLTH 642 Quiz: Lipids Score for this quiz: 64 out of 70

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HLTH 642 Quiz: Lipids Score for this quiz: 64 out of 70 Submitted Sep 6 at 10:14am This attempt took 44 minutes. Question 1 2 / 2 pts Which type of acid is linoleic acid? n-9 n-7 n-6 n-3 Ques... tion 2 2 / 2 pts Ketogenesis would be the HIGHEST ____. after a high-CHO meal after a high-protein meal after a high-fat meal during prolonged starvation Question 3 2 / 2 pts The key organ in the breakdown of lipoproteins is small intestine colon liver kidney Question 4 2 / 2 pts The HDL accomplishes its function in reverse cholesterol transport in two ways. Choose the phrase that does NOT describe one of these. increased apoC-2 activity to reduce its triacylglycerol content increased activity of LCAT on vascular endothelial cells increased activity of transferring cholesterol to other lipoproteins using its apoE component to bind to LDL receptors Question 5 2 / 2 pts What is the most important unsaturated fatty acid serving as a precursor for eicosanoid synthesis? arachidonic acid palmitoleic acid oleic acid linoleic acid Question 6 2 / 2 pts When foam cells, additional monocytes, mast cells, and T-cells build up in the media and intima of an artery, which structure is formed? atheroma hamartoma neuroma arterioma Question 7 2 / 2 pts Choose the correct sequential order for participants in lipid digestion. colipase, pancreatic lipase, bile, micelles bile, colipase, pancreatic lipase, micelles bile, enterokinase, colipase, micelles micelles, bile, pancreatic lipase, colipase Question 8 2 / 2 pts Which of the following lipoprotein serum levels is purely genetically determined? ApoB-100 ApoB-48 Lp(a) ApoA Question 9 0 / 2 pts Gastric lipase works best in which environment? alkaline neutral acidic either alkaline or acidic Question 10 2 / 2 pts The process by which bile salts are absorbed in the small intestine and return to the liver is called ____ of the bile salts. micelle induction resecretion conjugation enterohepatic circulation Question 11 2 / 2 pts How does orlistat reduce absorption of dietary fat? by replacing dietary fat with a synthetic, indigestible substitute by inhibiting the activity of pancreatic lipase by binding free fatty acids and causing their excretion by inhibiting HMG-CoA reductase Question 12 2 / 2 pts What is the carrier for medium-chain fatty acids in portal circulation? triacylglycerides cholesterol chylomicrons albumin Question 13 2 / 2 pts Lipolysis is stimulated by ____. epinephrine alone epinephrine and natriuretic peptides natriuretic peptides alone norepinephrine and epinephrine Question 14 2 / 2 pts Reverse cholesterol transport that removes cholesterol from peripheral cells and returns it to the liver is carried out by ____. LDL HDL VLDL lipoprotein lipase Question 15 2 / 2 pts Which apolipoprotein is key to the delivery of triacylglycerol to tissues? apoC-2 apoA-1 apoE apoB-100 Question 16 2 / 2 pts The fatty acid chains found in foods and body tissues range from ____ carbon atoms in length. 1 to 3 2 to 6 3 to 12 4 to 24 Question 17 2 / 2 pts Which of the following are true about fat metabolism in the adipose cell following a meal? Insulin increases activity of LPL Acetyl-CoA is used to create fatty acids LPL hydrolyzes triglycerides in the chylomicrons delivered in the blood All of the above Question 18 2 / 2 pts The key to the cell’s internalization of LDL is the interaction between the receptors and ____. cholesterol acyltransferase HMG-CoA reductase apolipoprotein B-100 apolipoprotein C-100 Question 19 2 / 2 pts Which drug therapy is associated with reduced cholesterol synthesis in the liver? insulin niacin gene therapy HMG-CoA reductase inhibitors Question 20 2 / 2 pts Ketones are produced from ____. cholesterol hormones amino groups acetyl-CoA Question 21 2 / 2 pts Research shows that there is an inverse association between moderate alcohol intake and all of the following EXCEPT oxidative stress CVD insulin sensitivity inflammation Question 22 2 / 2 pts Phosphatidylinositol is a membrane phospholipid that can ____. anchor membrane proteins that are attached to lipids stabilize the cytoplasm create pores in the cell membrane act as a receptor for viruses Question 23 2 / 2 pts What is the best description of the action of bile? Bile hydrolyzes ester bonds of the triacylglycerols. Bile anchors into dietary lipid so that pancreatic lipase can act. Bile emulsifies dietary lipid to increase its surface area. Bile digests the ester bond of the dietary cholesteryl ester. Question 24 0 / 2 pts Brown fat contains more mitochondria than white fat and plays a key role in thermogenesis energy storage hormone production all of the above Question 25 2 / 2 pts The key enzyme in the synthesis of cholesterol from acetyl-CoA is acetyl-CoA carboxylase HMG-CoA reductase citrate lyase fatty acid synthase Question 26 2 / 2 pts Carbon-carbon double bonds in the trans form ____. result in a kinking of the fatty acid into a U-shape extend the fatty acid into a linear shape are required to create saturated fatty acids are the hallmark of essential fatty acids Question 27 2 / 2 pts What is formed when fatty acids are oxidized in the mitochondria (i.e., what is the end product of betaoxidation)? glycerol pyruvate acetyl-CoA triacylglycerol Question 28 2 / 2 pts Large arteries contain which protein? albumin elastin fibrin plasmin Question 29 2 / 2 pts In what form is most body fat stored? fatty acids triacylglycerols cholesterol phospholipids Question 30 2 / 2 pts If there is 0.25 grams of trans fat in a food the nutrition label must show the amount of trans fat the nutrition label can show zero trans fat the nutrition label can make health claims about reducing CVD the nutrition label does not have to state anything about trans fat Question 31 2 / 2 pts Which of the following leaves the enterocyte via the portal vein and goes directly to the liver? SCFA LCFA Cholesterol Chylomicrons Question 32 2 / 2 pts The highest concentration of sphingolipids is found in cells of the ____. cardiovascular system digestive system reproductive system central nervous system Question 33 2 / 2 pts Trans fatty acids are considered to be dangerous to human health because they ____. elevate serum glucose levels raise LDL-C lower HDL-C raise LDL-C and lower HDL-C at the same time Question 34 2 / 2 pts Which lipoprotein is responsible for the transport of lipids that are consumed by mouth? Chylomicrons LDL VLDL ILDL Question 35 0 / 2 pts If a blood clot develops in a coronary artery that contains atherosclerotic plaque, which event may occur? hypertension aneurysm hypotension myocardial infarction [Show More]

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