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- Which of the following is false about chymotrypsin? A Hydrolytic cleavage of a peptide bond by chymotrypsin involves two nucleophilic attacks to the substrate B It is activated in the presence of trypsin C It is synthesized in the thyroid gland D Polypeptide chains in chymotrypsin are linked by S-S bondsFill in the blanks and explain the relationship between the paired words/phrases a. methotrexate: dihydrofolate reductase; ___________: thymidylate synthase b. __________: aspartate; purine: glycineTriacylglycerols in adipose tissue do not enter the bloodstream as triacyglycerolsexplain
- Which of these enzymes is needed to maintain a steady pool of methylene THF used in pyrimidine synthesis and cancer cells proliferation? Group of answer choices Phosphoglyceratedehydrogenase Glyceraldehydegehydrogenase Glycine decarboxylase ThymidylatesynthaseWhich of the following classes of compounds stimulates the release of insulin from pancreatic β-cells? a. Thiourylenes b. Biguanides c. Progestins d. Sulfonylureas e. α-Glucosides inhibitorsInsulin binding to its cellular receptor causes dimerization and phosphorylation of ( ) and assembly of a ( ) membrane transporter.
- Under severe starvation conditions, people develop “acetonebreath.” Explain.The rate of the reaction of glycogen N with inorganic phosphate, Pi, to form glucose-1-phosphate and glycogen N-1 is:Saponification is a process by which triacylglycerols are hydrolyzed to produce glycerol and fatty acid salt by the action of a strong acid. True False