What roles do enzymes play in nature? Group of answer choices A.They have a role in metabolic reactions B. They increase rates of reaction but do not shift the equilibrium formed between products and reactants C. They catalyze cellular processes D. All of the above
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- on Which of the following statements about enzymes is CORRECT? Select one:* O A. Enzymes slow down chemical reactions so that they occur properly O B. Enyzmes are carbohydrates OC. Enzymes are specific for their substrate O D. Enzymes cannot be reused A substrate is: Select one: O A. A molecule that dissolves in a solvent O B. The molecule an enzyme acts on OC. A dissolving substance in a solution а a L O DThe function of enzymes is to:a. accelerate reactions to change the final resultb. produce otherwise non-existing reactionsc. stall reactions that would have happened otherwised. balance the pH in chemical reactionse. provide energy to biochemical reactionsWhich of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…
- Which of the following is incorrect regarding the active site of anenzyme?a. is unique to that enzymeb. is the part of the enzyme where its substrate can fitc. can be used over and over againd. is not affected by environmental factors, such as pH andtemperatureWhich of the following statements regarding enzymes and metabolic reactions is correct? All enzyme reactions proceed towards a higher entropic state for the products. О а. O b. Enzymes set the pace and direction of metabolic reactions. Enzymes allow endergonic reactions to proceed towards the product by lowering the activation energy Ос. O d. The amount of free energy (AG) in a reaction is dependent on the ratio of the reactants to the products.Which of the following statement/s is/are TRUE of enzymes? 1. They increase the rate of reaction by stabilizing the transition state. II. They raise activation energy to shift the equilibrium to favor the products. . They lower activation energy by altering the products of a reaction. O l and III O Il and III O III only o l only
- The following statement can be said about enzymes: A. lowers activation energy of reactions B. regulates chemical activities in the body C. 3D shape is essential for normal function D. all of these E. B and C only½ O₂ + 2H+ +2 e → H₂O FAD + 2H+ + 2e → FADH₂ E'º = 0.816V E'º = -0.219V Calculate the AG" of the following reaction: FAD + H₂O → FADH₂ + 1/2 0₂. A. -200 kJ/mol B. -100 kJ/mol C. 50 kJ/mol D. 100 kJ/mol E. 200 kJ/molThe statement that is not true about enzymes is...A. works optimally if it is in accordance with the required pHB. has active sites where enzyme reactions with substrates occurC. can work in all reaction temperature rangeD. can only work for certain reactionsE. is strongly influenced by reaction temperature
- Which statement describes enzyme inhibitors? O They bind to the active site of an enzyme and decrease its activity. O They block access to the substrate and slow the rate of the reaction. O They change the shape of an enzyme reducing its ability to bind efficiently. All of the above.Which of the following statements about enzymes or their function is true? Select one: a. Enzymes are permanently modified during a biochemical reaction. O b. Enzymes act as catalysts. c. Enzymes modify reactions thermodynamic equilibrium. O d. Enzymes increase the activation energy required for a biochemical reaction to occur.Based on the given question which of the following choices is the correct answer?A. When an enzyme catalyzes a reaction, it increases the activation energy of the reactionB. When an enzyme catalyzes a reaction, it decreases the activation energy of the reactionC. When an enzyme catalyzes a reaction, it increases the activation energy of the productD. When an enzyme catalyzes a reaction, it does not affect the activation energy of the reaction.