Place the steps in the correct order for the liberation of short chain fatty acids from adipose tissue. 1 2 3 4 Glucagonbinds to its receptor [Choose ] Glucagonbinds to its receptor freefatty acids are bound by serum albumin CAMPis formed and activates protein kinaseA triacyl-,diacyl-, and monoglycerollipasescleave off fatty acids triacyl-,diacyl-, and monoglyc freefatty acids are bound by s V
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- Glucokinase acts as a glucose sensor in hepatocytes (livercells), a- and b-cells in the pancreas, enterocytes (intestinalwall cells), and the hypothalamus (a control center in thebrain of numerous physiological processes). Explain whyglucokinase can perform this role.After a carbohydrate-rich meal is consumed and the glucoserequirements of all tissues have been met, the liver begins tostore excess glucose in glycogen molecules. Explain the roleof the hexokinases in this phenomenon.If the brain needs glucose, then gluconeogenesis stops after reaction (9, 8, 10, 2) because (phosphoenolpyruvate, glucose, glucose-6-phosphaet, fructose-6-phosphate) can be exported from the hepatocyte using a transporter.
- Adipose tissue cannot resynthesize triacylglycerols from glycerol released during lipolysis (fat breakdown). Why not? Describe the metabolic route that is used to generate a glycerol compound for tri- acylglycerol synthesis.Triacylglycerols in adipose tissue do not enter the bloodstream as triacyglycerolsexplainExplain why insulin is required for adipocytes to synthesize triacylglycerols from fatty acids.
- LA student, halfan hour afier the dinner, containing about I50 g ofearbohydrates, 20 g of fat, and 40g of peotcin, is siting in a chair and reading d) cnumerate the rogulatory enzmes of fatty acid synthesis from elucose that have their activity and amount increased underthe influcnec ofthe mentioned hormoneDiabetes mellitus is characterized by insufficiency of thepancreas to produce enough insulin to regulate the blood sugarlevel. In type I diabetes, the pancreas produces no insulin, andthe patient is totally dependent on insulin from an externalsource to be infused at a rate to maintain blood sugar levelsat normal levels. Hyperglycemia occurs when blood glucoselevel rises much higher than the norm (>8 mmol/L) for pro-longed periods of time; hypoglycemia occurs when the blood sugar level falls below values of 3 mmol/L. Both situations canbe deleterious to the individual’s health. The normal range ofblood sugar is between 3.8 and 5.6 mmol/L, the target rangefor a controller regulating blood sugar.A patient with type I diabetes needs your help to maintainher blood sugar within an acceptable range (3 mmol/L<glucose<8 mmol/L). She has just eaten a large meal (a disturbance) that you estimate will release glucose accord-ing toD(t)=0.5e−0.05t,wheretis in minutes andD(t)is inmmol/L –…In 3-4 sentences, briefly explain how lactate is formed, the biological effect of lactate, and explain the biochemical process and path for conversion of lactate. 3. The hormones glucagon, epinephrine, and insulin, can regulate blood glucose levels to protect the brain. For each one provide a short explanation as to whether it raises or lowers glucose how it does this, and indicate whether it is metabolic or catabolic.
- Why are the essential fatty acid associated with low incidence of heart disease? Cite some clinical signs of essential fatty acid deficiency. Explain how aspirin can block the synthesis of prostaglandins?At body temperature, L-aspartate in proteins race-mizes to D-aspartate at an appreciable rate. Most pro-teins in the body have a very low level of D-aspartate, if itcan be detected at all. Elastin, however, has a fairly highlevel of D-aspartate. Moreover, the amount of D-aspartateincreases in direct proportion to the age of the person fromwhom the sample was taken. Why do you suppose thatmost proteins have little if any D-aspartate, while elastinhas levels of D-aspartate that increase steadily with age?Please select appropriate word in each bracket Glycogen provides short term energy storage primarily in liver and muscle. Defects in the enzymes that are required for either glycogen synthesis or breakdown therefore affect levels of [ Select ] ["glucose", "glycogen"] in the bloodstream and the amount of glycogen in the liver. This is exemplified by defects in [ Select ] ["glucose-6-phosphatase", "glycogen synthase"] , which is a deficit in breakdown and delivery, whereas mutations compromising [ Select ] ["glycogen synthase", "glycogen debranching enzyme"] result in a defect in synthesis, but defects in either enzyme produce [ Select ] ["hypoglycemia", "hypothermia"].