Homework Answers
Solution
At low substrate concentration, enzyme make prroduct raplidly, so velocity of reaction increases. So statement second and third are correct while other are incorrect.
At low substate concentration there are more enzyme molecule an less substrate molecule so in enzymatic reaction product will form rapidly.
The contact between enzyme and substrate can not be rare.
Enzyme will saturate at higher concentration of substrate.
Product molecule are not slowly produced becuase enzyme are biocatalyst which increase the rate of reaction.
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Review your knowledge of how enzyme activity is affected by substrate concentration by selecting the correct...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but eventually reaches a maximum value, even though the concentration of substrate continues to increase. Which of the following best explains why? O As substrate concentration increases, the substrates preferentially bind with each other instead of the active site of the enzyme, and no additional catalysis occurs. As substrate concentration increases, the active sites of all the enzyme molecules become occupied with substrate molecules, and...
6 The graph shows the effect of substrate concentration on the rate of an enzyme- controlled...
6 The graph shows the effect of substrate concentration on the rate of an enzyme- controlled reaction. The enzyme concentration is constant. reaction rate Which statement about the graph is correct? A Between Wand X, the substrate concentration number of enzyme molecules is limiting. Between X and Y, the number of enzyme molecules is limiting. Between X and Y, the number of substrate molecules is limiting. Between X and Y, the product concentration remains the same. Thanh in the nammanni...
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Explain the mechanism of how substrate concentration affects enzyme activity and how this mechanism yields the expected summary curve
The key factor that controls the initial rate of an enzyme catalysed reaction (Vo) is the...
The key factor that controls the initial rate of an enzyme catalysed reaction (Vo) is the concentration of the substrate of the reaction ([S]). In Damon's Michaelis-Menten experiment, the highest concentration of substrate used was 500 UM. What do you think will happen to the reaction velocity if higher concentrations of substrate were used? Select one: a. Vo will reach a plateau at higher (S) values O b. Vo will increase exponentially as (S) is increased O c. Vo will...
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Annabeth is testing the effect of substrate concentration on enzyme activity using cellobiase and p-nitrophenyl glucopyranoside. After she adds STOP solution to her reactions and measures the absorbances, she discovers that one sample has an absorbance that is beyond the range of her standard curve. How can Annabeth determine the concentration of product for this sample?
. fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an...
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fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? Question 1 of 6 ect Journal Explain why the maximum initial reaction rate cannot be reached at low lactose concentrations Question 3 of 6 HET ournal Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in...
1) 2) If the total enzyme concentration was 9 nmol/Lnmol/L, how many molecules of substrate can...
1)
2) If the total enzyme concentration was 9 nmol/Lnmol/L, how
many molecules of substrate can a molecule of enzyme process in
each minute?
Express your answer to three significant figures.
3) The kcat for neuraminidase at pH=6.15pH=6.15, 37 ∘C∘C is 26.8
s−1s−1. Calculate KMKM for the hydrolysis of sialic acid.
Express your answer with the appropriate units.
An enzyme that follows Michaelis-Menten kinetics has a Ky value of 6.00 uM and a keat value of 176 s-1. At an...
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high and detecting one product at a time Question 77 The initial velocity of an enzyme reaction (vo) describes A) The concentration of the enzyme at maximal velocity B) The concentration of substrate at maximal velocity C) The concentration of both at the start of the reaction D) The rate of the reaction when the substrate and enzyme are first med Question 78 What is the shape of a typical plot of initial rate vs substrate concentration tres kinetics? A)...
The results for enzyme activity analysis are presented in Table 5 (below). In this case, do...
The results for enzyme activity analysis are presented in Table 5 (below). In this case, do not use the graph to determine: (1.5 pts each) (Hint- use M-M equation) a) Vmax; b) Km; c) initial velocity at [S] 1 x 10-1 M; d) the amount of product formed during the first 5 minutes at [S] 2x10 3M; at a [S of 2x10 6M? e) what is Km and Vmax if the free [E is increased 3-fold? 3. v (umol/min 0.25...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but eventually reaches a maximum value, even though the concentration of substrate continues to increase. Which of the following best explains why? O As substrate concentration increases, the substrates preferentially bind with each other instead of the active site of the enzyme, and no additional catalysis occurs. As substrate concentration increases, the active sites of all the enzyme molecules become occupied with substrate molecules, and...
6 The graph shows the effect of substrate concentration on the rate of an enzyme- controlled reaction. The enzyme concentration is constant. reaction rate Which statement about the graph is correct? A Between Wand X, the substrate concentration number of enzyme molecules is limiting. Between X and Y, the number of enzyme molecules is limiting. Between X and Y, the number of substrate molecules is limiting. Between X and Y, the product concentration remains the same. Thanh in the nammanni...
The key factor that controls the initial rate of an enzyme catalysed reaction (Vo) is the concentration of the substrate of the reaction ([S]). In Damon's Michaelis-Menten experiment, the highest concentration of substrate used was 500 UM. What do you think will happen to the reaction velocity if higher concentrations of substrate were used? Select one: a. Vo will reach a plateau at higher (S) values O b. Vo will increase exponentially as (S) is increased O c. Vo will...
.
fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? Question 1 of 6 ect Journal Explain why the maximum initial reaction rate cannot be reached at low lactose concentrations Question 3 of 6 HET ournal Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in...
1)
2) If the total enzyme concentration was 9 nmol/Lnmol/L, how
many molecules of substrate can a molecule of enzyme process in
each minute?
Express your answer to three significant figures.
3) The kcat for neuraminidase at pH=6.15pH=6.15, 37 ∘C∘C is 26.8
s−1s−1. Calculate KMKM for the hydrolysis of sialic acid.
Express your answer with the appropriate units.
An enzyme that follows Michaelis-Menten kinetics has a Ky value of 6.00 uM and a keat value of 176 s-1. At an...
high and detecting one product at a time Question 77 The initial velocity of an enzyme reaction (vo) describes A) The concentration of the enzyme at maximal velocity B) The concentration of substrate at maximal velocity C) The concentration of both at the start of the reaction D) The rate of the reaction when the substrate and enzyme are first med Question 78 What is the shape of a typical plot of initial rate vs substrate concentration tres kinetics? A)...
The results for enzyme activity analysis are presented in Table 5 (below). In this case, do not use the graph to determine: (1.5 pts each) (Hint- use M-M equation) a) Vmax; b) Km; c) initial velocity at [S] 1 x 10-1 M; d) the amount of product formed during the first 5 minutes at [S] 2x10 3M; at a [S of 2x10 6M? e) what is Km and Vmax if the free [E is increased 3-fold? 3. v (umol/min 0.25...
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