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Крок 1, буклети
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Laboratories and factories use selective solvents to isolate and purify essential oils, alkaloids, antibiotics, and other medical substances. This method can also be used to isolate a pure substance from the reaction mixture or to continuously remove one of the reaction products from the reaction mixture in the process of synthesis. What is the name of the described method?
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What method of titration is used, when a precisely measured excess of the auxiliary titrant is added to the solution of the analyte substance?
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What is the name of the reactions in which the cycle of elementary steps that involve active particles is repeated many times?
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What is the mechanism of inhibitory action of neostigmine (prozerin)?
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The activity of a certain enzyme must be measured in the blood of a patient diagnosed with acute pancreatitis. What enzyme is it?
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Aminoglycoside antibacterial drugs prevent the attachment of formylmethionyl-tRNA by binding themselves to the 30S subunit of ribosomes. What process becomes disrupted as a result?
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For tetanus prevention, a toxin that has been neutralized with formalin (0.4%) at the temperature of 39 °C for four weeks is used. What kind of preparation is it?
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A man has undergone a course of radiotherapy and chemotherapy The drug complex included 5-fluorodeoxyuridine that is an inhibitor of thymidylate synthase. This drug blocks the synthesis of a certain substance. What substance is it?
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A benzimidazole derivative, omeprazole, has been prescribed to a patient with a duodenal ulcer accompanied by an increased secretion of gastric juice. What is the mechanism of action of this drug?
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What substances can be determined by means of substitution titration using the iodometric method?
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