Heme biosynthesis Study guides, Class notes & Summaries

iron absorption correct answers -ferric iron is taken in from diet -ferric iron is reduced by duodenal cytochrome B to become ferrous iron -ferrous iron is absorbed into enterocytes by DMT 1 -absorbed iron is stored as ferritin, or sent into portal hepatic circulation and carried by transferrin to developing RBCs transferrin correct answers plasma carrier protein for ferrous iron high iron level regulation correct answers -hepcidin is released from hepatocytes -ferroportin is inactivat...

NBME PHYSIOLOGY UPDATED EXAM WITH COMPLETE SOLUTIONS 2023/2024 Prostglandin - CORRECT ANSWER-From mast cells, macrophages, EC, and platelets Vasodilation, pain Rate controlling step in Insulin secretion - CORRECT ANSWER-Phosphorylation of glucose by glucokinase Glucokinase mutation - CORRECT ANSWER-Autosomal dominant form of early onset type 2 diabetes GLUT 2 - CORRECT ANSWER-low affinity high capacity glucose transporter. Uptake by beta cells Insulin release - CORRECT ANSWER-Bloo...

(P)In the duodenum, enteropeptidase correct answers Cleaves trypsinogen to form trypsin (P)Which of the three proteins in the ubiquiination pathway is the most responsible for recognizing the ubiquintated target protein? correct answers E3 (P)What is the regulatory mechanism by which arginine stimulates flux through the urea cycle? correct answers Arginine stimulates the production of the allosteric activator N- acetylglutamate (P)A person who has alkaptonuria is easily diagnosed from t...

BMB 401 Exam 2 With Complete Solution...

BMB401 - Biochemistry Exam 2 With Complete Solution...

1) The sum of all biosynthetic reactions in a cell is known as 1. A) metabolism. 2. B) anabolism. 3. C) catabolism. 4. D) synthatabolism. Answer: B Bloom’s Taxonomy: Knowledge Chapter Section: 3.13 2) Based on the functional roles of phosphate in various microbial metabolisms, deduce which compounds phosphate exists as in microorganisms. 1. A) organic compounds 2. B) inorganic compounds 3. C) both organic and inorganic compounds 4. D) neither organic nor inorganic compounds...

1. Which of the following statements about the fixation of atmospheric nitrogen (N2) into NH3 by living cells is false? A) It involves the transfer of eight electrons per mol of N2. B) It occurs in certain microorganisms, but not in humans. C) It requires a source of electrons, normally ferredoxin. D) It requires one ATP per mol of N2 fixed. E) It requires two key protein components, each containing iron. D 2. Which of the following is not true about the anammox reaction? A) An...

iron absorption - -ferric iron is taken in from diet -ferric iron is reduced by duodenal cytochrome B to become ferrous iron -ferrous iron is absorbed into enterocytes by DMT 1 -absorbed iron is stored as ferritin, or sent into portal hepatic circulation and carried by transferrin to developing RBCs transferrin - plasma carrier protein for ferrous iron high iron level regulation - -hepcidin is released from hepatocytes -ferroportin is inactivated, leading to decreased iron being transp...

iron absorption - -ferric iron is taken in from diet -ferric iron is reduced by duodenal cytochrome B to become ferrous iron -ferrous iron is absorbed into enterocytes by DMT 1 -absorbed iron is stored as ferritin, or sent into portal hepatic circulation and carried by transferrin to developing RBCs transferrin - plasma carrier protein for ferrous iron high iron level regulation - -hepcidin is released from hepatocytes -ferroportin is inactivated, leading to decreased iron being transp...

USMLE STEP 1 Pharmacology Final Exam Review USMLE STEP 1 Pharmacology Final Exam Review What are the major functions of the α1 receptor? Increase vascular smooth muscle contraction, increase pupillary dilator muscle contraction (mydriasis), increase intestinal and bladder sphincter muscle contraction What are the major functions of the α2 receptor? Decrease sympathetic outflow, decrease insulin release, decrease lipolysis, increase platelet aggregation, decrease aqueous humor producti...