INSTRUCTIONS- Answer the following multiple-choice questions andEXPLAIN in 3-5 sentences why you chose that answer.Answer properly- Enzymes act by:a. increasing the activation energy for a reactionb. lowering the activation energy for a reactionc. increasing the free energy of the systemd. decreasing the free energy of the system

An enzyme has the ability to attract the substrate to the active site which further results in the…

Answered: Enzymes act by: a. increasing the…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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An Enzyme.. A. Becomes part of the final products B. Is consumed by the reaction C. Is nonspecfic for substrate D. is heat & pH sensitive
Which of the following statement on the process of enzyme production is false? Select one: a. Agglomeration is sometimes used to increase solubility of enzyme powder b. After fermentation, intracellular enzymes can be directly extracted by filtration c. Spray drying can be used to dry the enzyme products into powder forms d. Chromatography is used to purify the enzyme produced
Which of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts? a. They are mostly and generally operative under mild temperature, pressure, and pH conditions b. They are regulated only by substrate concentration c. They do not effect the reaction equilibrium, but lower the reaction's activation energy d. They are recycled at the end of the reaction Choose all that apply
Enzymes are: A. Broken down in reactions that require energy input. B. Not needed forr catabolic reactions. C. Electron carrier molecules. D. Proteins that function as catalysts. E. All of the choices are correct.
Which of the following statement about the enzyme thermodynamics is TRUE? a. Enzymes increase the activation barrier (∆G cat) of the products b. Enzymes decrease the activation barrier (∆G cat) of the products c. Enzymes decrease the free energy (∆G) of the products d. Enzymes decrease the free energy (∆G) of the reactants e. Enzymes increase the activation barrier (∆G cat) of the reactants
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
Match the letters with the following uncatalyzed products free energy progress of reaction catalyzed reaction activation energy without an enzyme net change in energy between reactants and products reactants activation energy with an energy
Enzymes will Question 29 options: lower the free energy of a reaction raise the activation energy of a reaction raise the free energy of a reaction lower the activation energy of a reaction
As you change the temperature from a low temperature to a high temperature what happens to the rate of an enzymatic reaction, in general terms? A The reaction rate will steadily increase as the temperature increases. B The reaction rate will steadily decrease as the temperature increases. C The reaction rate will start low, then increase, and then decrease again as the temperature increases. D The reaction rate will not change as the temperature increases.
Examine the metabolic pathway shown in Figure 8.18. Draw a table indicating the relative concentrations of molecules A, B, C, and D if you were to remove Enzyme 1, 2, or 3 from the system.
a. How does an enzyme speed up the reaction of a substrate? b. After the products have formed, what happens to the enzyme?
Enzymes work by at least three mechanisms. Which of the following is NOT a mechanism by which enzymes function? A. by putting reactants in close proximity to each other. B. by altering the free energy ( ΔG) of the reaction. C. by orienting the reactants so they are positioned to favour the transition state. D. by altering the immediate environment of the reactants to promote reactant interactions.

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Enzymes act by: a. increasing the activation energy for a reaction b. lowering the activation energy for a reaction c. increasing the free energy of the system d. decreasing the free energy of the system