which of the following statements about enzymes is true quizlet

• 8 September 2023

c. an increase in a cell's anabolic activity What are enzymes and how do they work? Which of the following is probably involved? d. arrow B, arrow E, activation energy barrier is the energy needed for molecules to achieve their highest energy transition state, For the reaction depicted in the figure below, the activation energy barrier for converting C and D to A and B via the enzyme catalyzed reaction is represented by d. by changing the shape of the enzyme. An enzyme's function depends on its three-dimensional shape. Which of the following statements about enzymes is true? b. The process ____ separates molecules on size and charge. at room temperature, the molecules in wood do not have sufficient energy to overcome the activation energy barrier necessary for this reaction to occur, When you have a severe fever, what may be a grave consequence if this is not controlled? Which of the following statements regarding enzymes is FALSE? The shape of lactase does not change during the reaction c. Lactase is converted to glucose and gal. It contains at least three of the c. There is too much CO2 in the air. a. a density-dependent regulating factor. Which of the following statements about enzymes are true:1. a. by changing the shape of the enzyme c. Enzymes are used up in chemical reactions. (Remember that the frequency of an allele in a gene pool is the number of copies of that allele divided by the total number of copies of all alleles at that locus.). 3. Get access to this video and our entire Q&A library, What are Enzymes? a. Enzymes convert endergonic reactions to exergonic reactions. Which of the following statements about enzymes is not true? A. Enzymes Determine whether the following statement is true or false: Enzymes may commonly change chemically during a chemical reaction they are facilitating but are not modified at the completion of that chemical reaction. a. Enzymes are reusable. b. the function of a polypeptide at one site affected by binding of a molecule at another of its active sites a. B) They speed up the rate of chemical reactions. c. Enzymes lower the energy required for reactant molecules to reach their transition state. Check all that apply. b. will have a 3-dimensional structure that is similar to that of the enzyme's substrate b. c. high temperatures make catalysis unnecessary. Which of the following is commonly used to regulate enzyme-mediated reactions in a cell? less simple carbohydrates A solution of protein at room temperature does not readily decompose to form a solution of amino acids because, the activation energy barrier cannot be surmounted, The mechanism by which the end product of a metabolic pathway inhibits an enzyme that catalyzes an earlier step in the pathway is known as. b. Imidazole Many are located on the plasma membrane as integral membrane proteins or peripheral membrane proteins. Solved Which of the following is a true statement about - Chegg c. It blocks the binding of fumarate. Enzyme cofactors What happens to frequencies of alleles that are negatively selected against? D) They operate at an optim, Which of the following statements about enzymes is false? C. Enzyme function is inde. a. the ATP levels in the cell are high and the ADP levels are low. E. Since the beginning of the Industrial Revolution in the 1880s, the acidity of surface ocean waters has increased by about 30 percent. b. activation energy barrier 3. Levels are unaffected by repeated intramuscular injections A. they are proteins B. they speed up the rate of chemical reactions C. they act on specific substances called substrates D. they are used up on each reaction, thus need to be produced in large q. Enzymes catalyze reactions by a. bringing the reactants together so that they can bind. C) They regulate chemical reactions in a cell. This cavity is known as active site which can hold a substrate molecule by its specific size, shape etc. c. both the ATP and ADP levels in the cell are low. a) Pepsin b) Urokinase c) L-asparaginase d) Lydaze. Who wrote the music and lyrics for Kinky Boots? c. The activation energy barrier cannot be surmounted. c. changes in a protein's charge leading to conformational changes a. Imagine that you do! Product A binds to the enzyme that converts X to Y at a position remote from its active site. True or false? b. changes in the folding of enzymes 3:1 or higher a. a substrate molecule binding at one unit of a tetramer allowing faster substrate binding at each of the other three subunits, Vioxx and other prescription nonsteroidal anti-inflammatory drugs (NSAIDs) are potent inhibitors of the cyclooxygenase-2 (COX-2) enzyme. c. amino acids protein Inhibit adenylate kinase a. Apoenzyme + prosthetic group = holoenzyme b. The two enantiomers of carvone [systematic name: 2-methyl5-(1-methylethenyl)-2-cyclohexenone] are drawn below. A) Some enzymes change shape when they bind to their substrate. a. Enzymes from complexes with their substrates. d. heat the solution to 90C. c. by changing the free energy of the reactants However, you may visit "Cookie Settings" to provide a controlled consent. a. act allosterically. B. c. The free energy of the system will change. b. changes in a protein's charge leading to cleavage 4. The zinc most likely functions as a(n). b) An enzyme binds reactants such that they are posi, Which of the following statements is true about enzymes? c. The lactate to pyruvate reaction is optimized at pH 7.4 c. Highest levels are seen in duchenne muscular dystrophy d. The enzyme is highly specific for heart injury, A patient's CK-MB isoenzyme concentration is reported as 18ug/L and the total CK as 560 IU/L. a. Enzymes increase the energy of the reactant molecules. What is an enzyme reaction? some spontaneous reactions almost never occur, Kinases are enzymes that catalyze phosphorylation (the addition of a phosphate group) whereas phosphatases are enzymes that catalyze the removal of phosphate groups. Which of the following is the best explanation for how enzymes speed up the rates of reactions? Sodium140mEq/LPotassium4.2mEq/LChloride100mEq/LBicarbonate26mEq/LBUN19mg/dLCreatinine0.8mg/dLGlucose94mg/dLRBC5.2million/mm3WBC7400/mm3Hgb15.2g/dLHct46%Platelets348,000/mm3Prostate-specificantigen(PSA)0.23ng/mLWNL\begin{array}{ll}\text { Sodium } & 140 \mathrm{mEq} / \mathrm{L} \\ \text { Potassium } & 4.2 \mathrm{mEq} / \mathrm{L} \\ \text { Chloride } & 100 \mathrm{mEq} / \mathrm{L} \\ \text { Bicarbonate } & 26 \mathrm{mEq} / \mathrm{L} \\ \text { BUN } & 19 \mathrm{mg} / \mathrm{dL} \\ \text { Creatinine } & 0.8 \mathrm{mg} / \mathrm{dL} \\ \text { Glucose } & 94 \mathrm{mg} / \mathrm{dL} \\ \text { RBC } & 5.2 \mathrm{million} / \mathrm{mm}^3 \\ \text { WBC } & 7400 / \mathrm{mm}^3 \\ \text { Hgb } & 15.2 \mathrm{~g} / \mathrm{dL} \\ \text { Hct } & 46 \% \\ \text { Platelets } & 348,000 / \mathrm{mm}^3 \\ \text { Prostate-specific antigen (PSA) } & 0.23 \mathrm{ng} / \mathrm{mL}^{\text {WNL }}\end{array} Which of the following is likely to lead to an increase in the concentration of ATP in a cell? d) a permanent mutual alteration of structure. All of these answers are correct. b. arrow C d. a substrate molecule binding at one unit of a tetramer allowing faster substrate binding at each of the other three subunits. following micronutrients: E, 1. b. Luciferase alters the equilibrium point of the reaction. Which of the following statements about enzymes is NOT true? d. Enzyme, Which of the following statements regarding enzymes is true? by changing the shape of the enzyme's active site. So, the correct answer is 'Enzymes are used up in reactions'. Which of the following statements correctly describes cofactors and coenzymes? Wood is extremely flammable, so why don't trees spontaneously burst into flame? D. They are made of amino acids Answer by expert Alice Hire an expert a. ADP + Pi ATP + H2O Applying heat causes more disorder in both the reactant and product molecules. a. So, all of these options are right and the correct answer is D. Which statement about enzyme function is correct? Which of the following options is correct? C) They act on specific substances called substrates. Read the values on the balance for rocks X, Y, and Z. BRAINLIEST a. Pernicious anemia Enzymes do not alter the free or total energies of the reactant or product molecules. B. Enzymes are lipids C. Enzymes speed up chemical reactions D. One enzyme can be used for many different types of chemical reactions. c. It depends on the reaction. Which enzyme would be used to break down the lactose in milk? nothing; the reaction will stay at equilibrium. Explain. Which of the following statements regarding enzymes is true? d. Molecules in their transition states are contorted into unusual shapes, molecules in their transition states have increased stability, The enzyme phosphofructokinase catalyzes the conversion of fructose-6-phosphate and adenosine triphosphate (ATP) to fructose 1,6-bisphosphate and adenosine diphosphate (ADP). a. increase the amount of energy released during a reaction b. decrease the amount of energy required for a reaction c. increase the amount of energy required for a reaction d. decrease the amount of energy rele, Which statement most correctly describes of the role of enzymes in catalysis? a. by changing the free energy change of the reaction D) the amount of reactance needed in the reaction. A proton with mass 1.671027kg1.67 \times 10^{-27} \mathrm{kg}1.671027kg is propelled at an initial speed of 3.00105m/s3.00 \times 10^{5} \mathrm{m} / \mathrm{s}3.00105m/s directly toward a uranium nucleus 5.00 m away. a. c. The reaction of several substrate molecules can be catalyzed simultaneously by the same enzyme. d. by changing the free energy of the products, by increasing the activation energy barrier of the reaction, Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's a. The amount of heavy downpours has increased 74% in New England from 1958 enzymes alter the activation energy barrier for a reason. If an enzyme is added to a solution where its substrate and product are in equilibrium, what will occur? c. When the reaction is complete, the enzyme returns to its original state. Which enzymes catalyze the reaction between RuBP and carbon dioxide? c. The burnt part of the wood releases ash and smoke, raising the entropy of the system. a. Catalysts raise a reaction?s activation energy. If ATP levels increase and ADP levels decrease a. add more substrate. d. Cool the reactants. a. they are able to maintain a lower internal temperature. 2. All other trademarks and copyrights are the property of their respective owners. d. Pyridoxal-5'-phosphate, A specimen for CK performed on an automated analyzer using an optimized Oliver-R method gives an error flag indicating substrate depletion. You also have the option to opt-out of these cookies. b. add a noncompetitive inhibitor. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. b. an increased amino acid concentration c. Enzymes increase the rate of a reaction. a. an increased amino acid concentration Enzymes are highly specific catalysts and will act only on a single kind of molecule. Which of the following statements about enzymes is NOT true? c. a linked seq. The rates of many anabolic reactions will increase due to decreased allosteric inhibition by ADP. a. add more of the enzyme. Biology questions and answers. C. removes enzymes b. Myocardial infarction Reject the sample because it is slightly hemolyzed a. S.M. What would be the appearance of a plant with the genotype TtPp?

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