Pfk 1 Study guides, Class notes & Summaries

UNE Medical Biochemistry Midterm Review Already Graded A 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 would result in a deficiency in which of the...

activation energy correct answers energy needed to get a reaction started Delta G (change in G - change in free energy) correct answers respresented in a reaction coordinate diagram. Positive is thermodynamically unfavorable. Negative is thermodynamically favorable (exergonic - release energy). = G(products) - G(reactants) enzyme correct answers catalyze chemical reaction. Lower activation energy. Biological catalyst (protein) enzyme inhibition correct answers results in decrease in act...

MEDICAL BIOCHEMISTRY FINAL, UNE BIOCHEMISTRY FINAL EXAM /ACTUAL EXAM WITH CORRECT DETAILED AND VERIFIED ANSWERS/A+ GRADE In glycolysis, is considered the committed step in the pathway. - ANSWER PFK-1 Phospholipids are made up of one or more fatty acids, a core, a phosphate, and which one of the following? - ANSWER alcohol

What neurotransmitter stimulates release of epinephrine from adrenal medulla? - Answer- acetylcholine What is a metabolite if epinephrine that suggests epi-secreting carcinoma? What is another assoc symptom? - Answer- metanephrine; assoc with HBP What does acetazolamide (carbonic anhydrase ib) treat? - Answer- glaucoma, epilepsy, altitude sickness, congestive heart failure can cause dehydration Sickle cell anemia is due to... - Answer- pt mutation of Glu -> val What is a major ne...

↑ exercise = ___ catecholamines (epinephrine and norepinephrine) - ️️↑ catecholamines (epinephrine and norepinephrine) 1 g carbohydrates = ___ kcal - ️️4 kcal 1 g fat = ___ kcal - ️️9 kcal 1 g protein = ___ kcal - ️️4 kcal 1 glucose = ___ total ATP 1 glycogen = ___ total ATP - ️️- 32 ATP - 33 ATP 3500 kcal = ? - ️️1 pound As muscle glycogen ___ , liver glycogenolysis ↑ - ️️decreases ATP ↓, ADP ↑, CK ___ ATP ↑, CK ___ - ️️ATP ↓, ADP ↑,...

a-D-glucose + ATP ---> ________ + ________ + H+ correct answer: a-D-glucose-6-phosphate + ADP For the first five steps of glycolysis, the appropriate sequence of enzymes is: a. phosphofructokinase-1 (PFK-1) b. hexokinase/glucokinase c. fructose bisphosphate aldolase d. phosphoglucoisomerase e. triose phosphate isomerase (TPI) correct answer: B, D, A, C, E Hexokinase and glucokinase belong to the kinase subclass of what class of enzymes? correct answer: transferase In the ...

catabolic correct answer: A process in which large molecules are broken down to use energy Anabolic correct answer: A process in which large molecules are built from small molecules (uses energy to form molecules) amphibolic pathways correct answer: metabolic pathways that have both catabolic and anabolic functions most reactions in pathways are _______ correct answer: reversible most reactions delta G is close to _______ correct answer: 0 irreversible reactions have a ______...

3 molecules with high PTP - Answer--phosphoenolpyruvate (PEP -1,3-BPG -creatine phosphate 3 stages of metabolism - Answer-Stage 1:Digestion Stage 2:Acetyl CoA Production Stage 3:Energy Production 7TM - Answer-7 Transmembrane Regions regions present on all G-Protein coupled receptors transmits information initiated by light, hormones etc Activated carriers - Answer-molecules used to carry electrons generated during glycolysis Activators of PFK - Answer--fructose 2,6-bisphosphate: shifts...

46. Which method of directly regulates PFK-I? A) feedback inhibition by fructose 2,6-bisphosphate B) feed forward activation by phosphoenolpyruvate C) allosteric activation by AMP D) its phosphorylation in response to glucagon signaling E) allosteric activation by citrate 47. Which statement regarding regulation of glycolysis and gluconeogenesis is FALSE? A) Phosphofructokinase-1 and fructose 1,6-bisphosphatase are PRevented from forming a futile cycle by reversible covalent modificatio...

Which of the following terms in the disease course represents the initial appearance of symptoms in the host? a. Incubation period b. prodromal stage c. subclinical stage d. acute stage b. prodromal stage In Von Gierke disease, large amounts of glycogen accumulate in the liver and kidneys because a defiency in which of the following enzymes? a. phosphofructokinase 1 (PFK–1) b. phosphofructokinase 2 (PFK–2) c. hexokinase d. glucose–1–phosphatase e. glucose–6–phosphatase e....