Quiz on Fatty Acid and Triglyceride Metabolism: 20 Questions

Quiz: Fatty Acid and Triglyceride Metabolism Instructions The quiz:  Covers the Learn material from Module 4: Week 4 .  Contains 20 multiple-choice and true/false questions.  Is limited to 40 minutes .  Allows 1 attempt .  Is worth 20 points . Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 4: Week 4. Attempt History Attempt Time Score LATEST Attempt 1 30 minutes 20 out of 20 Correct answers are hidden. Score for this quiz: 20 out of 20 Submitted Jun 5 at 11:01pm This attempt took 30 minutes. Question 1 1 / 1 pts In what part of the compartment of the cell does fatty acid synthesis take place? Mitochondria ER Cytosol Lysosomes Question 2 1 / 1 pts

Which of these hormones does not play a role in the mobilization of fatty acids from triacyglycerol stores in the fasted state? Desnutrin Lipoprotein lipase Monoacylglycerol lipase Hormone-sensitive lipase Question 3 1 / 1 pts The liver is the primary site of fatty acid synthesis and also stores large amounts of triacylglycerols. True False Question 4 1 / 1 pts Whereas normal cells derive most of the fatty acids they hey need for membrane phospholipid synthesis from extracellualr sources, cancer cells derive theirs from de nove fatty acid synthesis. True False Question 5 1 / 1 pts The first fatty acid produced in the de novo fatty acid synthesis pathway is; Palmitic acid

Stearic acid Plamitoleic acid Linoleic acid Question 6 1 / 1 pts Which of these is not a source of acetyl-CoA used for fatty acid synthesis? Glucose Amino acid carbon skeleton Ethanol Pyrimidines Question 7 1 / 1 pts The activity of acetyl-CoA carboxylase is promoted by these factors except; Citrate Palmitoyl-CoA High mitochndrial ATP level Insulin Question 8 1 / 1 pts

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The conversion of palmitic acid to palmitoleic acid is catalyzed by this enzyme; Palmitoyl-CoA elongase Malonyl-CoA desaturase Stearoyl-CoA desaturase deacnoyl-ACP thioesterase Question 9 1 / 1 pts A 2-month old baby who has been on a skimmed milk-based formula since birth because the mother was HIV positive, has recently developed scaly dermatitis, alopecia, easy bruising and is lagging in developmental milestones. The patient is diagnosed with Essential Fatty Acid deficiency – which of these fatty acids will have normal levels in this patient? Linolenic acid (ω3, C18:Δ9,12,15) Linoleic acid (ω6, C18: Δ9,12,1) Palmitoleic acid (ω7, C16: Δ9) Eicosapentaenoic acid (ω3, C20: Δ5,8,11,14,17) Question 10 1 / 1 pts The most abundant polyunsaturated fatty acid in the human central nervous system is __________ and it is known to modulate phosphatidylserin ebiosynthesis and neural signaling. DHA EPA

Lignoceric acid Linolenic acid Question 11 1 / 1 pts The major site of tAG storage in humans is the; Myocytes Adipocytes Pancreas Astroctytes Question 12 1 / 1 pts Dietary TAG are transported by ____ in the blood stream; Albumin Transthyretin VLDL Chylomicrons Question 13 1 / 1 pts In which of these tissues does the synthesis of TAG begin with a monoacylglycerol rather than glycerol 3-phosphate and fatty acyl-CoA?

Enterocytes Adipocytes Myocytes Hepatocytes Question 14 1 / 1 pts This lipoprotein has the highest protein to lipid ratio(density) content relative to the others; HDL LDL VLDL Chylomicrons Question 15 1 / 1 pts The plasma level of dietary triglycerides and cholesteryl esters will be significantly diminished if the synthesis of this lipoprotein is impaired? HDL LDL VLDL Chylomicrons

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Question 16 1 / 1 pts Which of these is a component of a nascent chylomicron; Apo E Apo B100 Apo C-II Apo B48 Question 17 1 / 1 pts Which of these enzymes does not play a role in ethanol metabolism? Catalase alcohol dehydrogenase Microsomal ethanol-oxidizing system of enzymes Lipoprotein lipase Question 18 1 / 1 pts What is the fate of acetate generated from ethanol metabolism in hepatocytes when the ethanol is consumed without a carbohydrate meal? Hepatic fatty acid synthesis Gluconeogenesis

synthesis of eicosanoids oxidized for ATP generation Question 19 1 / 1 pts Chronic ethanol consumption can impair Vitamin A metabolism by competitively inhibiting retinol dehydrogenase (the enzyme that converts retinol to all-trans retinal used in forming rhodopsin). True False Question 20 1 / 1 pts Ethanol can be used in the treatment methnaol and ethylene glycol poisonings by competitive inhibition of alcohol dehydrogenase. The danger of this treatment option is; Cerebral edema Hypoglycemia Bone fractures Liver cirrhosis

MSCI530_Quiz_Fatty Acid and Triglyceride Metabolism

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