Medtestpro

UNIT 1 UNE CHEM 1005 EXAM QUESTIONS AND ANSWERS Hemoglobin binds oxygen with a greater affinity in the: R state Hemoglobin bound to heme is termed a holoprotein. The heme or porphoryin ring is required for oxygen binding and it is termed a: prosthetic group Alpha helices and beta sheets are primarily stabilized by: H bonding Ligases are a class of enzymes characterized by their ability to: synthesize bonds between carbon atoms and an additional atom that is involved in the cleavage of ...

UNE CHEM 1005 Midterm Review Questions & Answers Rated 100% Correct!! An

Unit 4 test UNE medical biochemistry Questions With Complete Answers. A deficiency in which of the following enzymes will NOT result in an increase in orotic acid? a. N-acetylglutamate synthetase b. Ornithine transcarbamoylase c. Argininosuccinate synthetase d. Argininosuccinate lyase N-acetylglutamate synthetase (NAG synthetase Feedback: deficiencies in NAG synthetase or carbamoyl phosphate synthetase I will NOT result in an increase in orotic acid. Which of the following enzymes is...

UNE Medical Biochemistry Unit 4 Questions & Answers Which of the following statements is consistent with nitrogen transport in the fasted state? Glutaminase will be inactive The urea cycle will be active Hepatic glutamate dehydrogenase will primarily produce glutamate Transport of alanine from skeletal muscle will be reduced The urea cycle will be active Which of the following enzymes is likely to be active in both the fed and fasted states? Glycogen synthase Pyruvate kinase Horm...

UNE Medical Biochemistry Unit 3 Review (For this guide, I made the questions from the video lectures, study guides, and quiz/test reviews) Rated A+ What occurs when glucagon is high and insulin is low? Beta-oxidation During the fasted state, the liver uses ______ as fuel and the pathway is _______. Fatty acids, Lipolysis in the adipose During the fasted state, the red blood cell uses ______ as fuel and the pathway is _______. Glucose, Hepatic glycogenolysis, and gluconeogenesis During t...

UNE medical biochemistry Unit 3 Questions and Answers In the fasted state, fatty acyl-CoA are transported across the mitochondrial membrane. The transport of fatty acids via carnitine palmitoyl transferase I (CPTI) can be directly inhibited by which of the following compounds? a. Malonyl CoA b. Carnitine c. Acetyl CoA d. Palmitate Malonyl CoA Under fasting conditions (ratio of insulin to glucagon <1), elevated glucagon will activate which of the following enzymes? a. glycogen syntha...

UNE CHEM 1005: MEDICAL BIOCHEMISTRY FINAL EXAM Carnitine palmitoyl transferase - transfers acyl groups from CoA to carnitine & vice versa - inhibited by malonyl-CoA ketone bodies - acetoacetate, β-hydroxybutyrate, acetone - oxidized as fuel source in extreme fasting d-3-hydroxybutyrate dehydrogenase interconversion of acetoacetate and 3-hydroxybutyrate

UNE medical biochem FINAL |108 Questions | With Complete Solutions. Which of the following urea cycle enzymes catalyzes the reaction hydrolyzing the release of urea from arginine? Arginase Arginase releases urea from arginine through a hydrolytic cleavage. Which of the following enzymes is likely to be active in both the fed and fasted states? Glutaminase Glutaminase in the liver is responsible for freeing ammonia from glutamine. In the fasted state, glutamine will be in excess due t...

UNE Medical Biochem Final Exam Review Rated 100% Correct!! short chain fatty acids and medium chain fatty acids enter mitochondria by: Diffusion Under fasting conditions (ratio of insulin to glucagon <1), elevated glucagon will activate which of the following enzymes? Hormone sensitive lipase the process of ketogenesis refers to the conversion of acetyl-CoA to which of the following compounds? B-hydroxybutyrate A well, 2-year-old female presents to the clinic with symptoms of a viral...

UNE Medical Biochemistry Midterm Questions With Complete Solutions. Which of the following proteins is likely to have quaternary structure? A multimeric protein that contains multiple peptide chains Prosthetic groups are complex nonprotein molecules that participate in catalysis by providing functional groups that form a covalent intermediate between the enzyme and the substrate. Which of the following is an example of a coenzyme or cofactor that participates in a covalent catalysis reactio...

UNE medical biochemistry Unit 2 Test If unregulated, which of the following pairs of enzymes would represent a futile cycle? Fructose 1,6 bisphosphatase and phosphofructokinase-1 Rotenone blocks complex 1 in the ETC. This increases levels of NADH and would likely impair the function of which of the following enzymes? Pyruvate dehydrogenase complex Newborn screening shows a biotinidase deficiency in a 2-day old infant. This deficienty impairs the infant's ability to reuse and recycle biot...

UNE Medical Biochemistry Midterm Questions With Complete Solutions. Which of the following proteins is likely to have quaternary structure? A multimeric protein that contains multiple peptide chains Prosthetic groups are complex nonprotein molecules that participate in catalysis by providing functional groups that form a covalent intermediate between the enzyme and the substrate. Which of the following is an example of a coenzyme or cofactor that participates in a covalent catalysis reactio...

UNE medical biochemistry Unit 2 Test If unregulated, which of the following pairs of enzymes would represent a futile cycle? Fructose 1,6 bisphosphatase and phosphofructokinase-1 Rotenone blocks complex 1 in the ETC. This increases levels of NADH and would likely impair the function of which of the following enzymes? Pyruvate dehydrogenase complex Newborn screening shows a biotinidase deficiency in a 2-day old infant. This deficienty impairs the infant's ability to reuse and recycle biot...

Exam(Elaborations) UNE Biochemistry Unit 4 – Final 2024 Which of the following amino acids is considered non essential because it is generated by the urea cycle? A. arginine B. lysine C. asparagine D. glutamine E. histidine arginine The urea cycle takes place in which of the following subcellular locations? A. the cytosol and the mitochondria B. the mitochondria only C. the cytosol only the cytosol and the mitochondria Ubiquitination is a means of targeting a pro...

Exam(Elaborations) UNE Biochemistry Unit 4 – Final 2024 Which of the following amino acids is considered non essential because it is generated by the urea cycle? A. arginine B. lysine C. asparagine D. glutamine E. histidine arginine The urea cycle takes place in which of the following subcellular locations? A. the cytosol and the mitochondria B. the mitochondria only C. the cytosol only the cytosol and the mitochondria Ubiquitination is a means of targeting a pro...

UNE Medical Biochem Final Exam Questions With Solved Answers Scored A+ The cellular uptake of LDL increase intracellular cholesterol levels. This has which of the following impacts on de novo cholesterol synthesis? Increases degradation of HMG-CoA reductase Dietary cholesterol is primarily transported in the body by which of the following lipoproteins? Chylomicrons. Cholesterol and TG from diet are transported from intestine to liver via chylomicrons. The LDL receptor is also highly re...

UNE Medical Biochem Final Exam Questions With Solved Answers Scored A+ The cellular uptake of LDL increase intracellular cholesterol levels. This has which of the following impacts on de novo cholesterol synthesis? Increases degradation of HMG-CoA reductase Dietary cholesterol is primarily transported in the body by which of the following lipoproteins? Chylomicrons. Cholesterol and TG from diet are transported from intestine to liver via chylomicrons. The LDL receptor is also highly re...

UNE Biochem Unit 4 Multiple Choice Questions With 100% Complete Answers. Which of the following non-essential amino acids is synthesized as part of the urea cycle? Arginine Which of the following reactions of the urea cycle takes place in the mitochondria? The synthesis of carbamoyl phosphate The transamination of all amino acids requires which of the following cofactors? Pyridoxal phosphate (PLP) A comatose infant is brought to the ER. In the course of the examination, plasma ammonia w...

UNE BIOCHEM UNIT 1 Domains are common structural elements that retain a particular function within the protein. Give an example fo a protein domain. An arrangement of Beta-strands connected by a-helices (BaBaBa) Define what a protein domain is A section os a protein structure sufficient to perform a particular chemical or physical task

UNE Medical Biochemistry Midterm Review Questions & Answers Rated 100% Correct!! Ribose and NADPH A family presents for genetic counseling. The couple has two female children who are alive and well; however, their infant son recently died in the nursery with severe hemolysis (lysis of red blood cells) and jaundice. The wife recalls she lost a brother in infancy with severe hemolysis, induced after a viral infection. The physician suspects a glucose-6-phosphate dehydrogenase deficiency, this ...