Homework Answers
Answer: Option A ) an increase in the concentration of the end products.
Reason:
The end product of the enzyme-catalysed may act as a repressor or inhibitor, which reduces the rate of enzyme activity.
Although, the increase of temperature and pH may reduce the enzyme activity, and increase in these parameters towards the optimum range as mentioned, would not cause this effect.
Similarly, the increase of substrate and enzyme concentration leads to a rise in enzyme activity, uptil a certain point, and beyond this point it does not cause any change in the activity.
Add Answer to:
16 If other conditions were to remain constant, which one of the following changes would explain...
3) Enzyme kinetics are determined under initial rate conditions, wherein the initial substrate concentrations changes very...
3) Enzyme kinetics are determined under initial rate conditions, wherein the initial substrate concentrations changes very little, because: (A) Products do not accumulate and inhibit the forward reaction (B) Enzymes are unstable under most assay conditions, and rapidly lose activity (C) The substrate concentration does not change appreciably and so does not create an additional variable (D) All of the above (E) Some of the above
In HPLC, if the particle size is reduced from 3.17 um to 1.19 um but all other conditions remain constant, by what fact...
In HPLC, if the particle size is reduced from 3.17 um to 1.19 um but all other conditions remain constant, by what factor will the column pressure need to be increased to maintain a constant linear flow rate? factor Alternatively, if the column pressure is increased by a factor of 10.0 but all other conditions remain constant, by what factor will the linear flow rate increase? factor
2. hypothesize the best conditions (pH and temperature) under which the enzyme chymotrypsin functions with an...
2. hypothesize the best conditions (pH and temperature) under
which the enzyme chymotrypsin functions with an appropriate
reference. also, hypothesize what will occur in the presence of an
inhibitor and the type of inhibition.
EXPERIMENT 5: ENZYME ACTIVITY WITH a-CHYMOTRYPSIN Prelab Assignment 1. Prepare a flow chart, covering one half of the experimental work (either part A and C if your lab bench is on the window side of the lab or part B and D if your locker is...
QUESTION 16 The following balanced chemical equation is in equilibrium Which of the following changes will...
QUESTION 16 The following balanced chemical equation is in equilibrium Which of the following changes will shift the equilibrium towards forming more products? 2A(g) + B(g) = 30g) 20(g) Increase the pressure of B Double the pressure of both reactants and products Decrease the volume of the reaction vessel, while the total mass and the temperature remain constant Add a catalyst Decrease the pressure of A QUESTION 17 You seal 10.0 moles of solid NH4NO3 into an empty 5.00 L...
12. Which of the following statements is true of enzyme catalysts? A B C To be...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
11. Local conditions can affect the specificity of an enzyme for its substrate, and thus the...
11. Local conditions can affect the specificity of an enzyme for its substrate, and thus the enzyme's catalytic activity. Which of the following alterations would be least likely to affect an enzyme in this manner? a) Increased temperature b) Increased substrate concentration c) increased H concentration d) Increased pH e) none of the above True / False: (3 pts each) 12. The Gl tracts of carnivores are longer and more specialized than those of herbivores. 13. Micelles are formed when...
wered PUIUL SUUWWUIN VULPUL L E 1. Circle all of the following terms that are associated...
wered PUIUL SUUWWUIN VULPUL L E 1. Circle all of the following terms that are associated with the definition of enzymes Catalyst zymogen protein globular irreversible substrate 2. Pepsin, a protease enzyme that hydrolyzes polypeptides, functions in the stomach at an optimum pH of 1.5 to 2.0. What happens to the rate of pepsin-catalyzed reaction affected by each of the following conditions (#20.20)? 2.1) increasing the concentration of polypeptides (substrate) 2.2) changing the pH to 5.0 2.3) running the reaction...
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide....
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide. Indicate the substrate, the enzyme, and the products. Explain why this chemical reaction is an important biological function. 2. Each enzyme operates at an ideal pH and temperature, which may vary for other enzymes. (a) Pepsin is an enzyme found in the human stomach for digesting protein. What would be the optimum pH conditions for pepsin? What effect does entry into the intestines have...
2. Why does increasing the amount of substrate increase the amount of color produced in the...
2. Why does increasing the amount of substrate increase the
amount of color produced in the test tubes?
ght questions: etermina un in the 1. In Activity 1, what is the purpose of the test tube containing only w test tube containing only water and substrate? 2. Why does increasing the amount of substrate increase the amount of con strate increase the amount of color produced in the test tubes? 3. If you were to look at the three test...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
In HPLC, if the particle size is reduced from 3.17 um to 1.19 um but all other conditions remain constant, by what factor will the column pressure need to be increased to maintain a constant linear flow rate? factor Alternatively, if the column pressure is increased by a factor of 10.0 but all other conditions remain constant, by what factor will the linear flow rate increase? factor
2. hypothesize the best conditions (pH and temperature) under
which the enzyme chymotrypsin functions with an appropriate
reference. also, hypothesize what will occur in the presence of an
inhibitor and the type of inhibition.
EXPERIMENT 5: ENZYME ACTIVITY WITH a-CHYMOTRYPSIN Prelab Assignment 1. Prepare a flow chart, covering one half of the experimental work (either part A and C if your lab bench is on the window side of the lab or part B and D if your locker is...
QUESTION 16 The following balanced chemical equation is in equilibrium Which of the following changes will shift the equilibrium towards forming more products? 2A(g) + B(g) = 30g) 20(g) Increase the pressure of B Double the pressure of both reactants and products Decrease the volume of the reaction vessel, while the total mass and the temperature remain constant Add a catalyst Decrease the pressure of A QUESTION 17 You seal 10.0 moles of solid NH4NO3 into an empty 5.00 L...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
11. Local conditions can affect the specificity of an enzyme for its substrate, and thus the enzyme's catalytic activity. Which of the following alterations would be least likely to affect an enzyme in this manner? a) Increased temperature b) Increased substrate concentration c) increased H concentration d) Increased pH e) none of the above True / False: (3 pts each) 12. The Gl tracts of carnivores are longer and more specialized than those of herbivores. 13. Micelles are formed when...
wered PUIUL SUUWWUIN VULPUL L E 1. Circle all of the following terms that are associated with the definition of enzymes Catalyst zymogen protein globular irreversible substrate 2. Pepsin, a protease enzyme that hydrolyzes polypeptides, functions in the stomach at an optimum pH of 1.5 to 2.0. What happens to the rate of pepsin-catalyzed reaction affected by each of the following conditions (#20.20)? 2.1) increasing the concentration of polypeptides (substrate) 2.2) changing the pH to 5.0 2.3) running the reaction...
Discussion Questions 1. Write the decomposition chemical reaction for the effect of catalase on hydrogen peroxide. Indicate the substrate, the enzyme, and the products. Explain why this chemical reaction is an important biological function. 2. Each enzyme operates at an ideal pH and temperature, which may vary for other enzymes. (a) Pepsin is an enzyme found in the human stomach for digesting protein. What would be the optimum pH conditions for pepsin? What effect does entry into the intestines have...
2. Why does increasing the amount of substrate increase the
amount of color produced in the test tubes?
ght questions: etermina un in the 1. In Activity 1, what is the purpose of the test tube containing only w test tube containing only water and substrate? 2. Why does increasing the amount of substrate increase the amount of con strate increase the amount of color produced in the test tubes? 3. If you were to look at the three test...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
Most questions answered within 3 hours.
-
A simple random sample of size n=64 is obtained from a
population with a mean of...
asked 6 minutes ago -
(2 dimensions, 1 object, 2 accelerations)
1) A projectile is thrown with a wind. The wind...
asked 53 minutes ago -
Brian makes $34,100 per year. How much can Brian expect to
contribute to FICA taxes in...
asked 1 hour ago -
To buy a new house you must borrow $155,000. To do this you take
out a...
asked 1 hour ago -
Spacely Sprockets is evaluating the construction of a new plant
on land the company purchased for...
asked 2 hours ago -
1. Consider a linear regression model of y on K regressors and
an intercept.
(i) Describe...
asked 2 hours ago -
Enter a balanced equation for the reaction between hydrochloric
acid and sodium sulfite.
Express your answer...
asked 2 hours ago -
Give a regular expression describing the language
{x | x ∈ Σ* and x does not...
asked 2 hours ago -
Masses of 1.0 kg, 2.0 kg, and 3.0 kg are each separately subject
to a net...
asked 2 hours ago -
The mode of philosophical argumentation and thought. How do
philosophers think and write? What is important...
asked 3 hours ago -
At the beginning of the unit, you were asked whether you thought
it was appropriate or...
asked 3 hours ago -
Calculate the grams of carbon in 9.32 x 10+23 molecules of
benzene (C6H6).
asked 3 hours ago