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КРОК / KROK
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Яка група організмів має нуклеоїди - кільцеві молекули ДНК, що формують хромосоми простої будови (відсутні гістони)?
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A histological specimen demonstrates a parenchymal organ, the structural and functional unit of which is a follicle. The wall of the follicle is formed by cuboidal cells. The cavity of the follicle is filled with a colloid. What organ is being demonstrated in the specimen?
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A 63-year-old man, who has been suffering from chronic fibrous-cavernous pulmonary tuberculosis for 24 years, has been delivered to a nephrology department with uremia. Intravital diagnostic test for amyloid in the kidneys was positive. What amyloidosis is it in this case?
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During the surgery on the small intestine the surgeon revealed an area of the mucous membrane with a single longitudinal fold among the circular folds. Which portion of the small intestine is this structure typical for?
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One of the tunics of a hollow organ contains nucleated anastomosing fibers. The fibers consist of cells that form intercalated discs in the contact areas. What tissue forms this tunic of an organ?
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An unidentified surgical specimen is received for histopathologic analysis. A portion of the specimen is cut and stained with hematoxylin and eosin. Under the microscope, you see an organ encapsulated by dense connective tissue that extends to the deeper areas by way of the trabecular extensions. The organ can be subdivided into two regions: a cortex with lymphoid nodules and medulla with medullary cords populated by plasma cells, B-cells and T-cells. Which of the following structures is most likely the origin of this surgical specimen?
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A 35-year-old woman has come to her physician with chief complaint of elevated blood pressure up to 180/100 mm Hg. She currently does not take any medication. During the physical examination, her blood pressure is 140/80 mm Hg, heart rate is 65/min. and temperature is 36.8°C) She has a ''moon face'', hirsutism, centripetal obesity, and striae on the skin with atrophy over the abdomen and thighs. Which of the following is the most likely cause of this patient's condition?
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A 14-year old girl presents to the emergency department for evaluation of an <<infected leg>>. She states there is no history of trauma but mentions she had a history of sickle cell disease. On physical examination, her upper part of right shin is very painful, red, swollen and hot. Her temperature is 39.2°C) An X-ray shows focal bony lysis and loss of trabecular architecture in the metaphysis of right tibia. Increased activity of which of the following cells is the most likely cause of bone reabsorption in this patient?
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A 56-year-old man presents for a checkup. The patient says he has to urinate quite frequently, but denies any dysuria or pain on urination. Past medical history is significant for diabetes mellitus type 2 and hypertension, both managed medically. Current medications are metformin, aspirin, rosuvastatin, captopril and furosemide. Laboratory findings are significant for the following: Glycated Hemoglobin (Hb A1c) --- 8.0%, Fasting Blood Glucose --- 12 mmol/L. His doctor decides to add glibenclamide to the therapy. Which of the following is the most likely mechanism of this drug's action?
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It has been found out that one of a pesticide components is sodium arsenate that blocks lipoic acid. Which enzyme activity is impaired by this pesticide?
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