allosteric regulation : Which of the following statements about the electron transport chain is true? SI Biochemistry I Test 3 Flora Yan – [email protected] QUESTIONS: Enzyme Regulation 1. D) They can code for proteins associated with cell growth. C) They are produced by somatic mutations induced by carcinogenic substances. 20 seconds . Which of the following statements describes enzyme cooperativity? Which of the following describes the connection between these two statements? Enzymes increase the … B. 1. Tags: Question 10 . 14) You have discovered an enzyme that can catalyze two different chemical reactions. Which of the following is most likely to be correct? a) It is a direct precursor of Guanine b) It covalently binds to Allopurinol c) It is oxidized to form Uric acid d) It is oxidized to form Hypoxanthine e) It is a substrate rather than a product of the enzyme Xanthine oxidase 2- Methylated heterocyclic bases of plants include all except-a) Caffeine It allows a substance other than the substrate to bind to the enzyme, thereby activating or inhibiting it. B) They are introduced to a cell initially by retroviruses. Which of the following best describes an allosteric enzyme? Non-Competitive Inhibition. Allosteric regulation is important because it permits a more dynamic and complex control of enzyme activity, while allowing the cell to use almost identical enzymes, thereby conserving its … 52) Which of the following statements describes proto-oncogenes? Which of the following is the best explanation for this observation? Which of the following statements about allosteric regulation is NOT correct: A. Allosteric regulation is mediated by small molecules that interact non-covalently with an enzyme B. Allosteric regulation depends upon covalent modification of the regulated enzyme C. Allosteric regulation … A) Two types of allosteric regulation occur: The binding of one molecule activates the enzyme, while the binding of a different molecule inhibits it. It has an active site that binds to the substrate and an allosteric site that binds to the product. D) Either the enzyme has two distinct active sites, or the reactants involved in the two reactions are very similar in size and shape. SURVEY . A. Which of the following statements best describes an allosteric binding site? C) Two types of allosteric regulation occur: The binding of one molecule activates the enzyme, while the binding of a different molecule inhibits it. B) A product of a pathway serves as a competitive inhibitor of an early enzyme in the pathway. answer choices 1- Which statement best describes Xanthine ? Which of the following statements correctly indicate(s) the role of ATP or ADP as an allosteric regulator? Which of the following statements best describes allosteric regulation? Part A Which statements about allosteric enzymes are true? Feedback Inhibition. A mimic of the substrate competes for the active site. A) Their normal function is to suppress tumor growth. Which of the following characteristics is not associated with allosteric regulation of an enzyme's activity? A modulator molecule loosely binds to a protein, altering its activity. A) A multienzyme complex contains all the enzymes of a metabolic pathway. a) It is a binding site containing amino acids with aliphatic side chains. Which of the following statements describes what happens to a molecule that functions as the reducing agent (electron donor) in a redox or oxidation-reduction reaction? 1. exhibit cooperativity in substrate binding (homoallostery) 2. exhibit regulation of their activity by other, effector molecules (heteroallostery) 3. there is no difference in the binding curve for a cooperative binding versus noncooperative binding enzyme 4. are frequently multisubunit proteins, with multiple active … Allosteric Regulation.
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