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Notes in BCE3

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Published 10/21/2024  Which term best describes the relationship between the two compounds shown in Figure 5 (at end of the exam)?A) AnomersB) EpimersC) Enantiomers&n…
Published 10/21/2024 If the ΔG° of the reaction A → B is +20 kJ/mol, the reaction:A) will not occur spontaneouslyB) will never reach equilibriumC) will proceed at a rapid …
Published 10/21/2024 Select the TRUE statement about glycogen degradation.A) Glycogen degradation maintains glucose levels after a large meal. B) Glycogen d…
Published 10/21/2024 Which of the following statements about bioenergetics is TRUE?A) ΔG' informs on the chemical nature of the products and reactants, whereas ΔG°' takes …
Published 10/21/2024 Select the FALSE statement about the molecule shown in Figure 4 (at end of the exam).A) AMP is one of the components of this molecule.B) Thi…
Published 10/21/2024 Inorganic phosphate labeled with radioactive ³²P is added with glucose to a glycogen-free extract from liver, and the mixture is then incubated in the…
Published 10/21/2024 The type of enzyme that catalyzes the reaction shown in Figure 6 (at back of exam) is a/an:A) KinaseB) PhosphataseC) MutaseD) IsomeraseE) Glycosylase&…
Published 10/21/2024 For the hydrolysis of ATP, the data below can be best explained by:​ATP+H2​O→ADP+Pi​ΔG°' = -30.5 kJ/molΔG' = -50 kJ/mol in cellsA) In a typical cell, …
Published 10/21/2024 Reactions in the second half of glycolysis (steps 6 – 10) involve all of the following transformations EXCEPT:A) phosphorylation using ATP as a phosph…
Published 10/21/2024 iven the two reactions below, which statement is TRUE at standard conditions:phosphoenol pyruvate + ADP ⇌ ATP + pyruvateglucose-6-phosphate + ADP ⇌ AT…
Published 10/21/2024 A dehydrogenase catalyzes the reaction:A) 2-phosphoglycerate ⇌ phosphoenolpyruvateB) glyceraldehyde-3-phosphate ⇌ 1,3-bisphosphoglycerateC) 3-phosphog…
Published 10/21/2024 Which of the following is NOT involved in the catalytic mechanism of Class I aldolase?A) acid-base catalysisB) a positively charged N acting as an ele…
Published 10/21/2024 If glucose radiolabeled on carbon 2 as shown in Figure 7 (at end of exam) is converted to pyruvate by the glycolysis pathway, on what carbon of pyruva…
Published 10/21/2024  There are several metabolic fates of pyruvate, which include all of the following EXCEPT:A) Lactate is formed from pyruvate under anaerobic cond…
Published 10/21/2024  Which of the following best describes the NET organic products formed during the conversion of ONE molecule of FRUCTOSE-6-PHOSPHATE through the …
Published 10/21/2024 Select the FALSE statement below about the major pathways of fuel metabolism in mammals.A) The pentose phosphate pathway produces NADPH for biosynthes…
Published 10/21/2024 The reaction of the hydrolysis of glucose-6-phosphate to give glucose and inorganic phosphate (Pi​) has a ΔG°' = -13.8 kJ/mol. If the reaction takes p…
Published 10/21/2024 Which of the following glycolytic intermediates can spontaneously transfer a phosphate group to ADP in biochemical standard state conditions via an ex…
Published 10/21/2024 Select the FALSE statement about the phosphate groups in the glycolytic intermediates shown in Figure 3 (at end of exam).A) Phosphoester (1) is formed…
Published 10/21/2024 Select the FALSE statement below about the reactivity of D-glucose:A) When glucose reacts with Cu²⁺ ions, the aldehyde of glucose is oxidized to a car…
Published 10/21/2024 The third step of glycolysis converts fructose-6-phosphate to _______ using the enzyme _______ and requires _______ cofactor.A) fructose-1,6-bisphosph…
Published 10/21/2024 If one molecule of glucose undergoes all the glycolytic reactions up to 1,3-bisphosphoglycerate (13BPG), then stops because the phosphoglycerate kinas…
Published 10/21/2024  What is a common mechanistic feature of kinases?A) ATP is the nucleophile and the alcohol is the electrophile.B) ATP is a source of phosphate ra…
Published 10/21/2024 Every molecule of dihydroxyacetone phosphate (DHAP) that is converted to pyruvate via glycolysis undergoes ______ reaction(s) that involve transfer of…
Published 10/21/2024 Select the FALSE statement about glycolytic reactions involving the phosphorylated molecules shown in Figure 3 (at end of exam).A) Species A is a subs…
Published 10/21/2024 Use the information provided in Figure 2 (at end of the exam). What is the ΔG°' for the biosynthesis of the neurotransmitter acetylcholine from acetyl…
Published 10/21/2024 In step 5 of glycolysis, DHAP is converted to GAP, as catalyzed by the enzyme ________, which ________.A) triose phosphate isomerase; shifts a phospho…
Published 10/21/2024 Glycosidic bonds:A) can be broken by hydrolysis reactionsB) are formed by condensation reactions between a hemiacetal and an alcoholC) once formed the…
Published 10/21/2024 Many long-distance cyclists carb-load before an endurance event like a 100-kilometer ride. Carbohydrate loading involves eating carbohydrate-rich meal…
Published 10/21/2024 Select the FALSE statement about glucose, β-D-glucopyranose:A) is more stable than α-D-glucopyranose because the beta cyclic hemiacetal form can adopt…
Published 10/21/2024 The step of glycolysis that is catalyzed by glyceraldehyde 3-phosphate dehydrogenase involves all of the following except:A) oxidative phosphorylation…
Published 10/21/2024 Consider the standard free-energy changes for the reactions below:ATP + H2​O→ADP + Pi​                  &…
Published 10/21/2024 In the glycolysis pathway, enolase converts:A) 3-phosphoglycerate to 2-phosphoglycerateB) 1,3-bisphosphoglycerate to 3-phosphoglycerateC) 2-phosphogly…
Published 10/21/2024 Which of the following monosaccharides is NOT an aldose?A) L-glyceraldehydeB) D-galactoseC) D-glucoseD) D-fructoseE) D-ribose
Published 10/21/2024 Which of the following statements is FALSE concerning glycolysis in aerobic muscle?A) it is an endergonic pathwayB) it occurs in the cytoplasmC) phosp…
Published 10/21/2024 A certain metabolic pathway can be diagrammed as below, where A, B, C, and D are metabolites and X, Y, and Z are the enzymes that catalyze the reactio…
Published 10/21/2024 Which enzyme is NOT required for glycogen breakdown?A) Phosphoglucose isomeraseB) Glycogen phosphorylaseC) α-1,6-glucosidaseD) PhosphoglucomutaseE) De…
Published 10/21/2024 The oxidation of glyceraldehyde-3-phosphate usually requires:A) FADH₂B) NAD⁺C) NADHD) FADE) NADP⁺
Published 10/21/2024 When one mole of maltose is combined with the α-glucosidase enzyme and all the enzymes of the glycolytic pathway, the net production of ATP is ____:A)…
Published 10/21/2024 Select the FALSE statement about the cyclization of glucose into glucopyranose:A) During the reaction, the alcohol component is the nucleophile and th…
Published 10/21/2024 Glycoproteins have carbohydrates covalently linked to amino acid side chains of proteins. If the attachment is to a serine or threonine residue in a g…
Published 10/21/2024 Select the FALSE statement about two key metabolic intermediates, GAP and 1,3-BPG.A) GAP does not have enough phosphoryl transfer potential to form AT…
Published 10/21/2024 The reactions and reactivity of pyruvate involve all of the following EXCEPT:A) The most reduced carbon in pyruvate is the C3 methyl.B) The most oxidi…
Published 10/21/2024 Select the TRUE statement based on the information given below:(1)ATP+H2​O→ADP+Pi​ΔG°′=−30.5kJ/mol(2)Glucose-1-phosphate+H2​O→glucose+Pi​ΔG°′=−20.9kJ/…
Published 10/21/2024 Which of the following compounds found in the cell does NOT have a large negative free energy of hydrolysis at standard conditions (ΔG°')?A) phosphoen…
Published 10/21/2024 Select the TRUE statement about the disaccharide shown in Figure 1 (at end of exam).A) Complete hydrolysis will yield two molecules of D-glucose.B) Th…
Published 10/21/2024 Select the TRUE statement about catabolic reactions in which energy is EXTRACTED from foods taken in by an organism. Aerobic carbohydrate catabolism i…
Published 10/21/2024 Fill in Box 1 and Box 2
Published 10/21/2024 Fill in all of the boxes
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Published 10/21/2024 ΔGo' (+) ---> Keq __ 1ΔGo' (= 0) ---> Keq __ 1 ΔGo' (-) ---> Keq __ 1
Published 10/21/2024 Keq < 1 ___ product, ___ reactantKeq = 1 product = reactantKeq > 1 ____ product, ___ reactant
Published 10/21/2024 (1) T/F?(2) T/F?
Published 10/21/2024
Published 10/21/2024 Le chateloer's Principle:1) If ↑ reactant shift ?; increase or decrease in product?2) If ↑ product, shift?; increase or decrease in product/ reactant?…
Published 10/21/2024 Does the spontaneity of a reaction depend only on the relative energies of the reactants and products?
Published 10/21/2024 ΔG' --> initial reactant and product concetrations can be ____.ΔGo' --> reactant and product concentrations are ______ at start.Q --&g…
Published 10/21/2024
Published 10/21/2024
Published 10/21/2024
Published 10/21/2024 ΔG' < 0?ΔG' > 0?ΔG' = 0?
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Published 10/21/2024 TEST
Published 10/21/2024 TEST2
New Card 10/21/2024
New Card 10/21/2024 What organ does gluconeogenesis happen in?
New Card 10/21/2024
New Card 10/21/2024 oxido-reductase that involves NADH or NAD+
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New Card 10/21/2024 What is this?
New Card 10/21/2024 What is this?
New Card 10/21/2024 What is this?
New Card 10/21/2024 What is this?
New Card 10/21/2024 What is this?
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New Card 10/21/2024 name this structure
New Card 10/21/2024 name this structure
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New Card 10/23/2024 What is an aldol reaction
New Card 10/23/2024 Which functional groups in the ractant FBP are critical for the aldolase reaction?
New Card 10/23/2024 Proteins that catalyze this reaction are called: ________
New Card 10/23/2024 What drives this reaction?Energery ______ uppon phosphate transer from an ______
New Card 10/23/2024 Why is the CH2OH group at C6 phosphorylated rather than any of the other alcohols?C6 is a ___ while rest are ____. A _____ is sterically more accessib…
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