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9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form...
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates....
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates. b) enzymes lower the activation energy for chemical reactions. c) enzymes change the K eq for chemical reactions. d) many enzymes change shape slightly when substrate binds. e) reactions occur at the "active site" of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.
2 6. Which of the following is true of enzymes? The majority of enzymes are nonspecific...
2 6. Which of the following is true of enzymes? The majority of enzymes are nonspecific b. The majority of enzymes operate under extremely high temperatures e. They are biological catalysts d. They are all irreversible 7. Activation energy is a. Energy that must be added to a reaction started, which is recovered as the reaction proceeds b. Difference in energy between reactants and products c. Energy lost as heat d. free energy 8. Metal ions enhance catalysis by a....
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a....
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a. Act as molecular switches by turning on/off cell signaling and gene expression Acid-Base Catalysis b. Isomerizations, condensations, and Covalent Catalysis dehydrations (hydrolysis) c Nucleophile group on the enzyme attacks an electrophile substrate, forming an enzyme- Metal lon Catalysis substrate intermediate d. Proton transfer involving water or a functional group Coenzyme Dependent Redox Reactions e. Include dehyd rogenases. Involves NAD /NADH, NADP*/NAD PH, FAD/FADH2, FMN/FMNH2...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme. The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. The reaction always goes in the direction toward chemical equilibrium. O A and B only. O A, B, and C.
How do enzymes catalyze reactions? A) Enzymes bind with and change the conformation of substrates. B)...
How do enzymes catalyze reactions? A) Enzymes bind with and change the conformation of substrates. B) Enzymes change the free energy of the reactants. C) Enzymes increase the activation energy of a reaction. D) Enzymes carry out a reaction without needing reactants. E) Enzymes are denatured by a reaction to catalyze it.
All of the following statements about enzymes are true EXCEPT a. they speed up chemical reactions...
All of the following statements about enzymes are true EXCEPT a. they speed up chemical reactions without changing themselves b. enzymes are proteins c. they are highly specific d. they are biological catalysts e. they are used up in a chemical reaction
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
BIOCHEMISTRY please answers the both questions Q1: Which of the following statements about enzymes are true?...
BIOCHEMISTRY please answers the both questions Q1: Which of the following statements about enzymes are true? (Check all that apply) A) Enzymes affect the activation energy of the reaction. b) Enzymes affect the equilibrium position of a chemical reaction. c) Enzymes affect the Gibbs Free Energy change of a chemical reaction. d) Enzymes decrease the time needed for a reaction to reach equilibrium. Q2: What best describes the nature of the active site. a) It is a rigid pocket that...
Enzymes have a number of functions. Which of the following are characteristics of enzymes. Group of...
Enzymes have a number of functions. Which of the following are characteristics of enzymes. Group of answer choices They lower the activation energy of a reaction They temporarily form transition-state complexes with substrates They contain active sites for substrate binding They decrease the rate at which a reaction occurs
1. Write the category names of the following enzymes: hexokinase (EC 2.7.1.1) _; ATPases (EC 3.6.1.3)...
1. Write the category names of the following enzymes: hexokinase (EC 2.7.1.1) _; ATPases (EC 3.6.1.3) Fructose-bisphosphate aldolase (EC 4.1.2.13) ; ATP synthase (EC 7.1.2.2). phosphoglycerate mutase 1 (EC 5.4.2.11) ;DNA ligase (EC 6.5.1.1). Glyceraldehyde 3-phosphate dehydrogenase (EC 1.2.1.12) 2. True or False Enzymes are general chemical catalysts and each enzyme can recognize many different substrates in cells. Enzymes change the equilibrium constants for the reactions they catalyze. Enzymes lower the activation energy for the reactions they catalyze. Enzymes do...
2 6. Which of the following is true of enzymes? The majority of enzymes are nonspecific b. The majority of enzymes operate under extremely high temperatures e. They are biological catalysts d. They are all irreversible 7. Activation energy is a. Energy that must be added to a reaction started, which is recovered as the reaction proceeds b. Difference in energy between reactants and products c. Energy lost as heat d. free energy 8. Metal ions enhance catalysis by a....
ICE Chapter 7 .) Match each Catalytic Mechanism or Enzyme Mediated Reaction to its description: a. Act as molecular switches by turning on/off cell signaling and gene expression Acid-Base Catalysis b. Isomerizations, condensations, and Covalent Catalysis dehydrations (hydrolysis) c Nucleophile group on the enzyme attacks an electrophile substrate, forming an enzyme- Metal lon Catalysis substrate intermediate d. Proton transfer involving water or a functional group Coenzyme Dependent Redox Reactions e. Include dehyd rogenases. Involves NAD /NADH, NADP*/NAD PH, FAD/FADH2, FMN/FMNH2...
Question 2 2.5 pts Which of the following statements is (are) true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme. The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. The reaction always goes in the direction toward chemical equilibrium. O A and B only. O A, B, and C.
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
1. Write the category names of the following enzymes: hexokinase (EC 2.7.1.1) _; ATPases (EC 3.6.1.3) Fructose-bisphosphate aldolase (EC 4.1.2.13) ; ATP synthase (EC 7.1.2.2). phosphoglycerate mutase 1 (EC 5.4.2.11) ;DNA ligase (EC 6.5.1.1). Glyceraldehyde 3-phosphate dehydrogenase (EC 1.2.1.12) 2. True or False Enzymes are general chemical catalysts and each enzyme can recognize many different substrates in cells. Enzymes change the equilibrium constants for the reactions they catalyze. Enzymes lower the activation energy for the reactions they catalyze. Enzymes do...
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