Heme biosynthesis - Study guides, Class notes & Summaries

HEME BIOSYNTHESIS EXAM QUESTIONS AND ANSWERS....

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...

1. Describe common structural and functional features of eukaryotic cell. A. 1. Though mammals contain many types of cells which differ in function, shape, size etc., they have common features. 2. All types of cells contain nucleus, membrane and sub cellular components etc. 3. Each cell component has uniqe structure and function. Nucleus 1. It is located in the centre of most of the cells. It is surrounded by double layered membrane in which pores are present. 2. Pores present in...

BMB 401 Exam 2 With Complete Solution...

BMB401 - Biochemistry Exam 2 With Complete Solution...

(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...

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...

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...

Natural Science CLEP Latest Update 100% Correct cell smallest unit of most living things organism living thing prokaryotes cells that lack a membrane-bound nucleus and membrane-bound organelles organelles small structures in the cytoplasm of a cell that do special jobs eukoryotic cells has a nucleus, has organelles or other cell parts virus particle made up of DNA, RNA, protein, and in some cases lipids that can only replicate only by infecting living cells electron microscope used to exam...