3. After 12 days of starvation, a man reduced his weight by 4 kg. The doctor prescribed him biochemical blood test to analyze the level of lipids in serum blood. The results showed an elevated level of free fatty acids and triacylglycerols. Explain the results of the biochemical blood test. For that: a) name the main hormone which manages metabolism during starvation; b) draw the scheme of this hormone action on the adipose tissue; c) name the possible pathways of fatty acids usage in the liver during starvation and write down the proper schemes.

3. After 12 days of starvation, a man reduced his weight by 4 kg. The doctor prescribed him biochemical blood test to analyze the level of lipids in serum blood. The results showed an elevated level of free fatty acids and triacylglycerols. Explain the results of the biochemical blood test. For that: a) name the main hormone which manages metabolism during starvation; b) draw the scheme of this hormone action on the adipose tissue; c) name the possible pathways of fatty acids usage in the liver during starvation and write down the proper schemes.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter37: The Endocrine System

Section: Chapter Questions

Problem 2VCQ: Figure 37.11 Pancreatic tumors may cause excess secretion of glucagon. Type I diabetes results from...

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8. Ketone bodies were found in the urine of the patient with diabetes mellitus. Explain the sequence of metabolic changes resulting in ketonuria. For that answer the question and do the following tasks: a) what are the ranges of ketone bodics in blood of the healthy pcople and the patients with diabetes mellitus? b) explain the main changes in hormonal regulation of patient with diabetes mellitus; c) explain why the level of free fatty acids in the blood is clevated; d) name the pathways of lipid metabolism which becomes more active in patients with diabetes mellitus; e) draw the scheme of ketone body synthesis and oxidation.
3. A patient has got excess carbohydrate meal for the years and gain the weight. To explain this: a) draw the schemes of TAG synthesis in the liver; b) describe the transport of TAG from the liver to adipose tissue; c) describe the functions of insulin in the conversion of glucose to TAG in the liver and adipose tissue. Glucose containing Catoms was added to isolated hepatocytes inanexperiment. Ifthe glucose was added in excess, the rate of triacylglyccrol synthesis increased.
8. The adipose tissue is not only store triacylglycerols but also is active endocrine organ. Explain this function of the adipose tissuc. For that: a) explain the «clinical obesity» and possible consequences of the discase; b) name the biologically active molecules secreted by the adipose tissue; c) explain how secretion of these molecules changes with development of obesity. 9. A daily dict ofa 55-ycar-old woman, consisted ofa 500 g of carbohydrates, 100g of animal fats and 150 g of proteins, at the background of low physical activity.
5. There is an expression: diabetes mellitus is «hunger among abundance. What metabolic changes in diabetes confirm the validity of this statement? For answer: 9.8. Metabolic Changes in Diabetes Mellitus 535 a) list the main causes of metabolic changes in IDDM; b) enumerate the tissues with the main energy sources metabolism procceding according to this type of starvation; c) name the metabolic pathways that are activated and inhibited in these tissues, and explain why; d) list the symptoms of diabetes mellitus, that reflect such metabolic changes; c) draw a diagram of one of the mctabolic pathways that is activated in the liver under these conditions and explain the consequences of such activation.
3.On clinical examination of54-year-old woman the tumor of adrenal cortex was revealed. The glucoselevel in blood was increased. What is the main cause of hyperglycemia in this case? For answer:a)indicatethe hormone, which is elevated in the blood of patient;b)discuss this hormone synthesis and themechanism of signal transduction in target tissues; c)describe the metabolic pathways can be stimulated by this hormone in liver.
8. In patients with diabetes mellitus type I, the biochemical disorders result from changes in fuel metabolism. One of these signs is acidosis. Explain why such patients have a deviation of blood pH from the norm? For this: d) specify the hormone that accelerates this precursor formation and provide appropriate charts, starting from the hormone binding to adipocyte and concluding with precursor formation, give an explanation to the charts.
8. In patients with diabetes mellitus type I, the biochemical disorders result from changes in fucl metabolism. One of these signs is acidosis. Explain why such patients have a deviation of blood pH from the norm? For this me the Ocuics, name d) specify the hormone that accelerates this preeursor formation and provide appropriate charts, starting from the hormone binding to adipocyte and concluding with precursor formation, give an explanation to the charts.
4. A sportsman is doing a 10 km marathon for 1.5 hours. What changes in lipid metabolism in adipose tissue and muscles are triggered by long-term physical activity? To answer the question: a) name the hormone, controlling the lipid metabolism in adipocytes and write down the scheme of the process; b) explain, how some of the products of lipid mobilization, transported from adipocytes to the bloodstream, would be utilized by skeletal museles and liver in these conditions; c) calculate the ATP yield in the result of palmitolcic acid oxidation.
2. How does the fatty acids concentration changes in the blood during prolonged fasting? To answer the question: a) name the hormone which manages metabolism in this condition; b) draw the scheme of this hormone action on the adipose tissue; 352 Chapter 7. Lipid metabolism c) draw the scheme of the main metabolic pathway providing energy for the liver during prolonged fasting.
4. A sportsman is doing a 10 km marathon for 1.5 hours. What changes in lipid metabolism in adipose tissue and muscles are triggered by long-term physical activity? To answer the question: a) name the hormone, controlling the lipid metabolism in adipocytes and write down the scheme of the process; b) explain, how some of the products of lipid mobilization, transported from adipocytes to the bloodstream, would be utilized by skeletal muscles and liver in these conditions; c) calculate the ATP yicld in the result of palmitolcic acid oxidation.
It is noticed that when a strain of mice exercises, their blood glucose drops to very low levels. Which of the following can explain this situation? a) These mice do not make enough insulin b) these mice lack insulin receptors on their cells c)these mice lack glucagon d) these mice cannot synthesize glycogen from glucose
1. In thyrotoxicosis (Basedow’s diisease) excessive secretion of thyroid thyroxine hormone is observed and it is often accompanied by the increase in body tem- perature. Explain the reason for the increase in body temperature in this disease. For this purpose:a) draw the scheme of the process that maintains the temperature of the body;b) name the mechanism of the thyroxine effect on this process;c) show how the rate of О2 absorption by mitochon- dria of the cells will change in thyrotoxicosis.