Each of the following are true of enzymes a. they can only be used once b. they all require coenzymes c. they increase t...
Each of the following are true of enzymes a. they can only be used once b. they all require coenzymes c. they increase the activation energy of a reaction d. none of the above
Homework Answers
Each of the following are true of enzymes :-
C. they increase the activation energy of a reaction
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Each of the following are true of enzymes a. they can only be used once b. they all require coenzymes c. they increase t...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B)...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B) lowering the activation energy of a reaction. C) lowering entropy in a system. D) increasing the temperature near a reaction. E) altering the equilibrium of a reaction. Which of the following contributes to the specificity of enzymes? A) Each enzyme has a wide range of temperature and pH optimum B) Each enzyme has an active site that interacts with many C) Substrates themselves may...
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction...
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction rates by lowering the energy of the products. Enzymes increase the rate at which products are created by preventing reactions from running backwards. Enzymes increase reaction rates by lowering the activation energy of a reaction. Enzymes increase reaction rates by interacting with the substrate molecules to facilitate the reaction, for example by contorting them to facilitate bond-breakage or orienting them to favor bond formation.
All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply...
All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply to the question) A. enzyme active sites function to lower the activation energy of substrate molecules B. enzymes may require coenzymes that change the shape of the active site C. enzymes increase the speed of chemical reactions D. enzymes may have allosteric sites that are used to regulate substrate-active site binding E. enzymes may require cofactors such as Ca++ that improve the binding of...
i. Which of the following is true for ALL B vitamins? They all function as coenzymes....
i. Which of the following is true for ALL B vitamins? They all function as coenzymes. They cannot be synthesized in the human body. They all play critical roles in energy metabolism. They are readily destroyed during food storage and cooking. 2. All of the following are recommended practices to preserve vitamins in food EXCEPT: use minimal water and time to cook vegetables. purchase milk in opaque containers to prevent light from destroying riboflavin. refrigerate fruits and vegetables to slow...
Please help answer ALL the following questions in the attachment. Please answer only if you’re certain....
Please help answer ALL the following questions in the
attachment. Please answer only if you’re certain. Thank you so much
for your help.
1 Find the mismatched pai a) Entropy (AS-measurement of disorder in a thermodynamic system b) AG<0-Energetically favorable (spontaneous) reaction c) First Law of Thermodynamics-Energy in a system is not created nor destroyed, only transformed d) Second Law of Thermodynamics-The entropy of a perfect crystal at 0 K is exactly equal to zero. e) Standard free energy (G-The...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
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....
All of the following are true of enzymes except: a. they are not consumed in the...
All of the following are true of enzymes except: a. they are not consumed in the reaction they catalyze b. they are only used in synthesis reactions c. they are specific for the reaction they catalyze d. they increase the rate at which a chemical reaction occurs
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form...
9. Which of the following statements 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 Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
107) The end product of the metabolism of glucose is: a) glucose b) carbohydrates c) proteins...
107) The end product of the metabolism of glucose is: a) glucose b) carbohydrates c) proteins d) succinate e) none of the above 108) Enzymes bind to: a) other enzymes b) products c) allosterics d) substrates e) none of the above 109) When end products inhibit enzymes: a) the enzymes inhibited are part of the synthetic pathway for that end product b) it is known as feed back inhibition c) it slows the production of the end product d) all...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B) lowering the activation energy of a reaction. C) lowering entropy in a system. D) increasing the temperature near a reaction. E) altering the equilibrium of a reaction. Which of the following contributes to the specificity of enzymes? A) Each enzyme has a wide range of temperature and pH optimum B) Each enzyme has an active site that interacts with many C) Substrates themselves may...
i. Which of the following is true for ALL B vitamins? They all function as coenzymes. They cannot be synthesized in the human body. They all play critical roles in energy metabolism. They are readily destroyed during food storage and cooking. 2. All of the following are recommended practices to preserve vitamins in food EXCEPT: use minimal water and time to cook vegetables. purchase milk in opaque containers to prevent light from destroying riboflavin. refrigerate fruits and vegetables to slow...
Please help answer ALL the following questions in the
attachment. Please answer only if you’re certain. Thank you so much
for your help.
1 Find the mismatched pai a) Entropy (AS-measurement of disorder in a thermodynamic system b) AG<0-Energetically favorable (spontaneous) reaction c) First Law of Thermodynamics-Energy in a system is not created nor destroyed, only transformed d) Second Law of Thermodynamics-The entropy of a perfect crystal at 0 K is exactly equal to zero. e) Standard free energy (G-The...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
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....
9. Which of the following statements 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 Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
107) The end product of the metabolism of glucose is: a) glucose b) carbohydrates c) proteins d) succinate e) none of the above 108) Enzymes bind to: a) other enzymes b) products c) allosterics d) substrates e) none of the above 109) When end products inhibit enzymes: a) the enzymes inhibited are part of the synthetic pathway for that end product b) it is known as feed back inhibition c) it slows the production of the end product d) all...
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