Homework Answers
a) In this case, we have the two regioisomers (molecular formula is same but OH is attached at the different positions). Now, with the help of enzyme only one regioisomer is formed.
Hence the reaction is regioselective and the enzyme exhibits regioselectivity.
b) In this case, we have the two enantiomers (Stereoisomers with the non superimposable mirror images). Now, with the help of the enzyme, only one enantiomer is formed.
Hence, the reaction is enantioselective and thus the enzyme exhibits enantioselectivity.
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Enzyme Specificity 1. The following cases show the products form when a reaction was carried out...
An enzyme-catalyzed reaction is carried out in a solution containing 0.2 M tris((hydroxymethyl)aminomethane (known as Tris,...
An enzyme-catalyzed reaction is carried out in a solution containing 0.2 M tris((hydroxymethyl)aminomethane (known as Tris, pK, 8.1). Shown below is the chemical structure in its protonated form. *NH, HOCH, C- CH, OH CHLOH The pH of the reaction mixture at the start is 7.8. As a result of the reaction, 0.033 moles/liter of His consumed. What will be the ratio of Tris (free base) to Tris (protonated form) at the beginning of the reaction? A B. C. D. 5:1....
An enzyme-catalyzed reaction was carried out in 5 ml of a 0.05 M phosphate buffer, pH...
An enzyme-catalyzed reaction was carried out in 5 ml of a 0.05 M phosphate buffer, pH 6.90. As a result of the reaction, 0.01 mole/liter of H+ was produced. a) What were the concentrations of each form of the buffer at the start of the reaction? b) What was the pH at the end of the reaction? c) Was this an appropriate buffer for this experiment? Why?
an enzyme-catalyzed reaction was carried out with the substrate concentration initially a thousand times greater than...
an enzyme-catalyzed reaction was carried out with the substrate concentration initially a thousand times greater than the Km for that substrate. After 9 minutes, 1% of the substrate had been converted to product, and the amount of product formed in the reaction mixture was 12micromols. If in a separate experiment, one third as much enzyme and twice as much substrate had been combined how long would it take for the same amount of product to form?
In a paper recently published, the authors carried out the following synthesis. Draw the major products...
In a paper recently published, the authors carried out the
following synthesis. Draw the major products (Product A &
Product B) that would form. Note: The first step (SOCl2, heat) is
done under dilute conditions to prevent reaction between the
product and other species in solution.
Questions 1-2: In a paper recently published, the authors carried out the following synthesis. Draw the major products (Product A & Product B) that would form. Note: The first step (SOCI2, heat) is done...
12,13,14 12 Assume that an enzyme-catalysed biochemical reaction is carried out in a solution ontaining 0.2...
12,13,14
12 Assume that an enzyme-catalysed biochemical reaction is carried out in a solution ontaining 0.2 M tris(Chydroxymethylaminomethane (known as Tris, pk, 8.1). Shown below is the chemical structure in its protonated form. OH HN GOH OH The pH of the reaction mixture at the start is 8.4. As a result of the reaction, 0.033 molester of H was generated. What was the ratio of Tris (free base) to Tris (protonated form) at the beginning of the reaction? 9.45 1...
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...
36. Many biochemical enzyme reactions fit the form of Michaelis Menton Kinetics. These reactions have the...
36. Many biochemical enzyme reactions fit the form of Michaelis Menton Kinetics. These reactions have the following characteristics: a) the rate of reaction is proportional to the enzyme concentration, E. b) at low substrate concentration the rate is proportional to the substrate concentration, S. c) at high substrate concentration the rate is independent of the substrate concentration, S. This type of reaction rate has the form - SE Ky + S When carried out in a batch reactor a material...
29. Which are the major reaction products of the following reaction, which is carried out in...
29. Which are the major reaction products of the following reaction, which is carried out in an inert solvent? AICI: solvent NO2 Oló - o 02 a) I and II b) III and IV c) I and IV d) II and III 30. Which is the major product of the following reactions? CH3CI Cl2 K2Cr207 FeCl3 FeCl3 H2SO4 a) para-chlorobenzoic acid b) meta-chlorobenzoic acid c) a mixture of para- and meta-chlorobenzoic acid d) a mixture of ortho- and para-chlorobenzoic acid...
1.) ( 10 pts) in 1828th, Wohler carried out very important reaction for Organic Chemistry. Show...
1.) ( 10 pts) in 1828th, Wohler carried out very important reaction for Organic Chemistry. Show the equation for that reaction and explain why is that reaction so important?
Which of the following sets of parameters are altered when a reaction is carried out in...
Which of the following sets of parameters are altered when a reaction is carried out in the presence of a catalyst? Select one: A. ΔG°, ΔH°, Keq B. ΔH°, ΔS°, krate C. ΔH°, ∆S°, Ea D. ΔG°, krate, Keq E. Ea, free energy of activation, krate
An enzyme-catalyzed reaction is carried out in a solution containing 0.2 M tris((hydroxymethyl)aminomethane (known as Tris, pK, 8.1). Shown below is the chemical structure in its protonated form. *NH, HOCH, C- CH, OH CHLOH The pH of the reaction mixture at the start is 7.8. As a result of the reaction, 0.033 moles/liter of His consumed. What will be the ratio of Tris (free base) to Tris (protonated form) at the beginning of the reaction? A B. C. D. 5:1....
In a paper recently published, the authors carried out the
following synthesis. Draw the major products (Product A &
Product B) that would form. Note: The first step (SOCl2, heat) is
done under dilute conditions to prevent reaction between the
product and other species in solution.
Questions 1-2: In a paper recently published, the authors carried out the following synthesis. Draw the major products (Product A & Product B) that would form. Note: The first step (SOCI2, heat) is done...
12,13,14
12 Assume that an enzyme-catalysed biochemical reaction is carried out in a solution ontaining 0.2 M tris(Chydroxymethylaminomethane (known as Tris, pk, 8.1). Shown below is the chemical structure in its protonated form. OH HN GOH OH The pH of the reaction mixture at the start is 8.4. As a result of the reaction, 0.033 molester of H was generated. What was the ratio of Tris (free base) to Tris (protonated form) at the beginning of the reaction? 9.45 1...
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...
36. Many biochemical enzyme reactions fit the form of Michaelis Menton Kinetics. These reactions have the following characteristics: a) the rate of reaction is proportional to the enzyme concentration, E. b) at low substrate concentration the rate is proportional to the substrate concentration, S. c) at high substrate concentration the rate is independent of the substrate concentration, S. This type of reaction rate has the form - SE Ky + S When carried out in a batch reactor a material...
29. Which are the major reaction products of the following reaction, which is carried out in an inert solvent? AICI: solvent NO2 Oló - o 02 a) I and II b) III and IV c) I and IV d) II and III 30. Which is the major product of the following reactions? CH3CI Cl2 K2Cr207 FeCl3 FeCl3 H2SO4 a) para-chlorobenzoic acid b) meta-chlorobenzoic acid c) a mixture of para- and meta-chlorobenzoic acid d) a mixture of ortho- and para-chlorobenzoic acid...
1.) ( 10 pts) in 1828th, Wohler carried out very important reaction for Organic Chemistry. Show the equation for that reaction and explain why is that reaction so important?
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