Question 15 Identify the effect of lowering the KM of phosphoglucoseisomerase on Phosphofructokinase activity. O Increased Activity O Decreased Activity O Activity Levels are not Changed
Q: Question 4 A series of 6-arylmethylidene penicillin-based sulfone inhibitors (1) were developed as a…
A: In gram-negative bacteria, beta-lactamase provides a resistance mechanism. It has four classes of…
Q: QUESTION 1 The EC number for Lysozyme is 3.2.1.17. These numbers refer to: OA. degree of random…
A: An enzyme is a type of protein that can be located within a cell. Enzymes are responsible for…
Q: During gluconeogenesis, whereby liver cells convert pyruvate to glucose, Fructose-6-phosphate (F6P)…
A: Free energy refers to the energy associated with the chemical reaction, which is available after the…
Q: Question 4 a-D-galactose from B-D-glucose can be differentiated using which method of analysis? O…
A: Alpha - D - Glucose and Beta - D - Glucose are the two cyclic hemiacetal forms of D - Glucose, which…
Q: QUESTION 2 An isocitrate dehydrogenase assay was performed on the enzyme sample and found to give an…
A: Given Values: ∆A =0.5ε=6220 M-1 cm-1l = 1 cm
Q: Question 16 is an irreversible competitive inhibitor of bacterial beta-lactamase. clavulanic acid O…
A: Enzymes are highly specialized proteins that act as a catalyst in the biological system, they are…
Q: QUESTION 27 When enzymes are placed into not optimal conditions, the enzyme's active site shape is…
A: -->>A ruler can be defined as a tool or device used to measure length and draw straight lines.…
Q: Question 11: The ESI MS spectrum of a protein biomarker of a disease shows 3 consecutive peaks at…
A: Mass spectrometer has three important parts, an ionization source (to create atomic and molecular…
Q: QUESTION 97 Vancomycin O interferes with the action of the lipid carrier that transports…
A: Vancomycin , a broad spectrum antibiotic that has activity against methicillin-resistant strains of…
Q: QUESTION 40 Galactose requires 5 reactions to transform to glucose 6-phosphate in order to enter…
A: Galactose is the sugar in milk. Infants have an enzyme in the small intestine that metabolizes…
Q: Question 7 Which of the following statements is CORRECT? The activity of the alpha(1,6)glucosidase…
A: Phosphatase enzymes are enzyme which are involved in the removal of phosphate group from the…
Q: QUESTION 4 Goldberger's direct research contributions leading to identification and replacement of…
A: Research is an integral part of scientific education. Research comprises of hypothesis, experiment,…
Q: QUESTION 29 The interaction of two or more polypeptide chains in a hemoglobin molecule is its O a.…
A: Hemoglobin consists of 4 polypeptide chain. two alpha chains of 141 amino acid residues each and two…
Q: QUESTION 30 Select the INCORRECT statement about Glutamate dehydrogenase: Oa. Catalyzes the…
A: Glutamate dehydrogenase: It is a mitochondrial enzyme that is primarily found in liver and also in…
Q: QUESTION 26 If a 10 mg/mL solution of ovalbumin (mol. wt 42 kDa) reacts with Biuret reagent, and has…
A: The biuret reaction :The absorption at 540 nm, being directly proportional to protein concentration,…
Q: Question 19 Proteins are made in the mitochondria of cells. True O False
A: Proteins are the macromolecules which are basically the polymer of amino acids.Proteins play very…
Q: QUESTION 24 The oxidation of 3 mol of glucose by the pentose phosphate pathway may result in the…
A:
Q: QUESTION 2 During glycolysis Glucose-6-phosphate (G6P) is converted to Fructose-6-phosphate (F6P) as…
A: Equilibrium of a reaction or a chemical equilibrium is the state of the reversible chemical system…
Q: Question 23 In determining glucose concentration using a glucometer, the test involves an enzymatic…
A: Glucometer is used to find the concentration of glucose sugar in thr blood.
Q: What is catalase and why do some microorganisms have it? Name two other types of bacteria that are…
A: Introduction: Bacteria is a single celled prokaryotic organism. Their cell structure is simpler than…
Q: Question 13 Which of the following can determine location of glysosidic linkages? O Polarimetric…
A: A glycosidic linkage or bond is a type of covalent bond that joins the carbohydrate or sugar…
Q: QUESTION 2 The Krebs Cycle and beta-oxidation of fatty acids differ in that: O The Krebs Cycle…
A: Metabolism is a series of chemical reactions that occur in the living body for the formation of…
Q: Question 29 Kappa- and lota- carrageenans contain 3,6-anhydro-a-D-galactopyranosyl residues. True O…
A: Introduction Carrageenan is used in food additives to thicken the food. Kappa carrageenan Found in…
Q: QUESTION 2 The Michaelis-Menten and the Lineweaver-Burk plots can be used to determine the Km and…
A: Enzymes are biocatalysts that assist in speeding up any biochemical reactions but they do not…
Q: Question 12 Starting from glutamine + aspartate + glycine + CO2+ N10-formyl-THF + ribose-5-P: How…
A: The biosynthesis of purine
Q: QUESTION 34 Which of the following represents a reaction that could be used to refill he TCA cycle…
A: ATP is the energy currency for all living cells. The citric acid cycle is also known as the…
Q: Question 25 The diameter of a ribosome is about 300 Å, while that of hemoglobin is about 5.5…
A: As per the given information the diameter of Ribosome is 300 Angstrom; The diameter of haemoglobin…
Q: QUESTION 1 As your first experiment as a graduate student, your advisor asks you to reconstitute…
A: Introduction All the organisms need energy to carry out all the necessary life processes l and this…
Q: Question 25 Which of the following enzymes is responsible for the addition of UDP-glucose to the…
A: Glycogen synthase is the enzyme responsible for the addition of UDP glucose to the growing glycogen…
Q: QUESTION 4 4.1 Name the enzyme that catalyses the proteolytic reaction shown on the diagram below.…
A:
Q: Question 28 All of the following foods are great sources of fiber, EXCEPT: O broccoli O whole wheat…
A: Fiber (roughage) is plant based foods items that is passed by the body undigested without breaking…
Q: QUESTION 34 Which of the following represents a reaction that could be used to refill the TCA cycle…
A: TCA cycle occurs in the matrix of mitochondria. The net result of Kreb cycle is that for each acetyl…
Q: If 2 molecules of glucose enters glycolysis, a total of how many carbon dioxide molecules are…
A: Total 8 molecule of carbon dioxide we will get from 2 molecule of glucose during aerobic…
Q: QUESTION 4 One of the enzymes involved in glycolysis aldoiase requares Ztor catalyss Under condons…
A: Enzymes are proteins that help biological processes move faster. Some enzymes require cofactors in…
Q: QUESTION 4 Following muscle injury, patients may be prescribed a muscle relaxant as a temporary…
A: relaxation implies that the fibers return to their original place as a consequence of the…
Q: ) In glycolysis, the glucose which has 6 carbon molecules is eventually broken down into 2 molecules…
A: Gkucose is the main molecule which is used by almost all living forms for generating energy. It…
Q: Question 11 Which reaction in glycolysis produces NADH? O oxidation of glyceraldehyde 3-phosphate O…
A:
Q: QUESTION 18 Explain the reason why at low ATP concentrations the velocity of PFK-1 is faster than…
A: Phosphofructokinase is the most important enzyme that is persistent in the mammalian glycolytic…
Q: QUESTION 4 When CO2 binds to hemoglobin, it reacts directly with OA. ferric iron O B. ferrous iron…
A: Hemoglobin is a protein, which is known to transport gaseous molecules to the tissues.
Q: QUESTION 28 APC/C leads to the regulated proteolysis of M-cyclin through. binding and degrading it…
A: Cyclins undergo a series of cycle of synthesis and degradation in each cell cycle. The cyclin-CDK…
Q: Question 16 Cleavage of Fructose 1, 6-biophosphate yields O A. Only an aldose Two aldoses OB. O.…
A: The cellular respiration involves breakdown of glucose that ultimately responsible for the…
Q: Question #15 Which of the following transporters we discussed in this part of the course transports…
A: A is incorrect Reason : GLUT transporter in liver : Transports glucose in and out of the liver cells…
Q: Question #8 Shown below are the chemical structures of several cofactors that are used in enzyme…
A: The names and properties of the coenzymes are as follows:
Q: QUESTION 28 Consider the following properties of the listed proteins A, B and C. Affinity for…
A: The isoelectric point of a protein is the pH at which the net charge of the protein is zero. At this…
Q: QUESTION 10 Select a property that does not belong to allosteric enzymes. They conform to hyperbolic…
A: Allosteric control, in biochemistry, is the activity of an enzyme by connecting to its respective…
Q: Question 14 Concerning peptidases: A Endopeptidases recognize specific amino acid sequences within…
A: Peptidases are the protein digesting enzymes. They may be endopeptidase or exopeptidase.
Q: . Which of the following antibiotics has the MOST toxicity a. Novobiocin b. Sulfanamide c.…
A: The coumarin novobiocin is delivered by Streptomyces (S. niveaus and S. spheroides), and its…
Q: Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the…
A: The translation is a process through which the polypeptide chain is synthesized based on the…
Q: Glucose-6-phosphate has different pathways that it can enter in the liver during the fed state. All…
A: Glucose-6-phosphate plays a major role in glucose production in liver and kidneys for releasing to…
Q: QUESTION 24 Alcohol dehydrogenase (ADH), catalyzes a reaction where primary alcohol is converted an…
A: Based on the catalytic activity of the enzyme they can be classified into 6 classes:…
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- Question 9 - Under anaerobic conditions in the muscle, lactate dehydrogenase catalyzes the reaction converting pyruvate to lactate. What is the metabolic reason for this fermentation reaction? It is necessary to reduce pyruvate before it can be converted to acetyl-CoA and enter the citric acid cycle in muscle. NAD* must be replenished for glycolysis to continue. The reaction creates NADH which can produce additional energy in the electron transport chain. O Lactate is more oxidized than pyruvate.QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibitionQuestion 1: When the CAC is run in reverse by microorganisms that use it to fix carbon, the citrate synthase reaction is different and is catalyzed by an enzyme called ATP-citrate lyase. Write the reaction catalyzed by ATP-citrate lyase, then briefly (in one sentence) explain why the use of different chemistry (different from the ‘normal’ direction) makes sense here.
- QUESTION 26 During gluconeogenesis, whereby liver cells convert pyruvate to glucose, Fructose-6-phosphate (F6P) is converted to Glucose-6-phosphate (G6P). If the standard equilibrium concentrations are: [F6P] = 0.52 M and [G6P] = 1.48 M, then Keq’ is ______ and the reaction is ________. Fructose-6-P ó Glucose-6-P > 1; exergonic > 1; endergonic < 1; exergonic < 1; endergonicQuestion:- 33) Glucose-6-phosphate has different pathways that it can enter in the liver during the fed state. All of the following are possible except OA.) it is oxidized to acetyl CoA for fatty acid biosynthesis O B). it can enter the pathway for glycogen biosynthesis O c.) it is a substrate for glucose-6-phosphatase OD. )it is oxidized in glycolysis to provide energy for the bodyQuestion 1: The standard reduction potential for the the cytochrome c Fe3+/Fe2+ redox couple and for the dioxygen/water redox couple. Part a: Use these values, and the relevant equation, to compute the standard free energy change for the transfer of 4 electrons from cytochrome c to dioxygen. Part b: Next, compute the free energy needed to pump four protons across the mitochondrial membrane, using the relevant equation and values of -.14V for Δψ and 1.4 for ΔpH. Part c: If energy conservation by cytochrome c oxidase involved only the four pumped protons (and standard conditions applied), what would be the efficiency of energy conservation at this step? (what is the ratio [energy conserved in the gradient] / [redox energy used] ?)
- QUESTION NO. 1L-Carnitine is synthesized primarily in the liver but also in the kidneys and then transported to other tissues. It is most concentrated in tissues that use fatty acids as their primary fuel, such as skeletal and cardiac muscle. In this regard, L-carnitine plays an important role in energy production by conjugating to fatty acids for transport from the cytosol into the mitochondria. L-carnitine shuttle is an example of A. ion driven active transport B. facilitated diffusion C. simple diffusion D. ATP driven active transportE. symport F. antiportQUESTION NO.2 Statements: (1) Glucose is both a hexose and a aldose. (2) There can never be more than three enantiomers for a molecule. (3) All common disaccharides have beta-one-four linkages. Which statements are true?Question 1: In some microorganisms, carbon fixation occurs by reversal of the citric acid cycle. This reversal is accomplished in part by the use of a strong reductant (ferredoxin) to drive the alpha-ketoglutarate dehydrogenase reaction in the reductive direction. Part a: ΔG°‘ for reaction as it occurs in the ‘normal’ (oxidative) citric acid cycle is -30.1 kJ/mol. The standard reduction potential for NADH is -0.32 V. In order to drive the reaction in the reverse direction, the reductant (a ferredoxin) must have a lower reduction potential than NADH/NAD+. Remembering that this is a two-electron reduction, and using the numbers given just above, compute the value of the ferredoxin reduction potential that would be needed to make the standard free energy zero (so that the reductive reaction is enegetically just as favorable as the oxidative reaction). Assume that all of the other reactants are the same in the reductive as in the oxidative reaction. Write out the steps in your calculation;…Question 29 options: If 6 molecules of acetyl CoA were completely oxidized by the CAC, how many molecules of FADH2 would be produced?
- Question:- 1.) If 2 molecules of glucose enters glycolysis, a total of how many carbon dioxide molecules are released after Krebs Cycle including those released during pyruvate processing?Question:- 2) oxaloacetate (OAA) occurs as an important intermediate in 2 metabolic processes a) indicate these reaction steps where OAA occurs b) indicate structure for OAA 3) how many reduced equivalents (as electron carrier) are obtained after an oxidation of C16H12O2? describe in detail the structure of these steps.Question No. 1 Give the advantages and disadvantages of submerged fermentation and solid state fermentation. Give two examples of acetic acid fermentation.