how is the rate of enzyme activity affected by increasing the concentration of the substate/

33,556 results
  1. CHEMISTRY PLEASE HELP

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

  2. Chemistry-rate laws

    1. Determine the overall reaction order for the reaction whose rate law is as follows: rate=k[O3][ClO]: a. 0 b. 1 c. 2 *** d. 3 2. For the reaction (A→2B) whose rate law is rate=k, which of the following will change the value of k? a. adding a catalyst

  3. chemistry

    The enzyme Y catalyzes the elementary reaction AB-->A + B An enzyme concentration of 1.0M Y can convert a maximum of 0.5M AB to the products A and B per second. What will happen when each of the following is added to a solution that contains 1.0M Y and

  4. Science work

    A reaction is thought to be second order with respect to the concentration of carbon monoxide. What evidence would support this? Answer options... A. Changing the initial concentration would have no effect on the rate. B. Any change in the initial

  5. Chemistry

    A decomposition reaction is found to be first order with respect to the reactant. What is the relationship between the rate and concentration of the reactant? A) The rate is inversely proportional to the square of the concentration B) The rate is inversely

  6. Chemistry 101

    Which of the following will not increase the rate of a reaction? a. using a catalyst b.increasing the temperature c. decreasing the concentration of a reactant d. finding a shorter path for the reaction to take place e. increasing the kinetic energy

  7. chemistry

    Given: 2so2 + o2 -> 2so3 + 44kcal Which change increase the concentration of so4? a. increasing temperature b. increasing the concentration of o2 c. decreasing the pressure d. decreasing the concentration of so2

  8. This is grade 12 biology

    What is the effect of enzyme concentration on enzyme activity? Explain how much enzyme activity changes as enzyme concentration decreases, and discuss why this occurs (on a molecular level). Is this right (and can you add more): As enzyme concentration

  9. chemistry

    The rate law of the overall reaction. A + B -> C is rate = k[ A ]^2 Which of the following not increase the rate of a chemical reaction? a) increasing the temperature of the reaction b)increasing the concentration of reaction A c)adding a catalyst for the

  10. Chemistry

    Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

  11. Biology

    why is protein folding important to enzyme activity?

  12. science

    Question: what do you think will happen to the rate of reaction if the concentration of enzyme is increased to five drops?Predict what thte rate would be for 5 drops. Answer:Roughly, the rate doubles when the concentration of enzyme doubles. Since the data

  13. Chemistry

    Acid-Base Titrations a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no

  14. AP Biology

    After an enzyme is mixed with its substrate, the amount of product formed is determined at 10-sec intervals for 1 min. Data: 0 secs. = 0.0 product formed (mg) 10 secs = .25 product formed (mg) 20 secs = .50 product formed (mg) 30 secs = .70 product formed

  15. college calculus

    1) each side of a square is increasing at a rate of 6cm/s. At what rate is the area of the square is 16 cm^2? 2)the radius of a sphere is increasing at a rate of 4mm/s.How fast is the volume increasing when the diameter is 80mm? 3)A particle moves along

  16. bio

    how is the rate of enzyme activity affected by increasing the concentration of the substate/

  17. ap biology

    * how do (1) temperature and (2) pH affect the activity of this enzyme? include a discussion of the relationship between the structure and the fuction of this enzyme as well as a discussion of how structure and ntion of an enzyme are affected by

  18. biology

    Regulation of an enzyme's activity occurs a) before the enzyme is produced b) during the production of the enzyme. c) when the enzyme already exists in the cell. d) at any point on the enzymatic production pathway. Thank you

  19. Biochemistry

    Consider the following kinetic parameter for a given enzyme: Km=4.7x10-5 M Vmax= 22 nmol/min/mg [i]=5x10-1 mM [s]=2x10-4 M Ki=3x10-4 M Calculate the rate of product formation in the presence of a competitive inhibitor. I know that I have to solve for Vo. I

  20. chemistry

    Consider the following kinetic parameter for a given enzyme: Km=4.7x10-5 M Vmax= 22 nmol/min/mg [i]=5x10-1 mM [s]=2x10-4 M Ki=3x10-4 M Calculate the rate of product formation in the presence of a competitive inhibitor. I know that I have to solve for Vo. I

  21. Chemistry

    ive calculated the amount of change for an enzyme controlled reaction as 1.5625 x 10^-8 mol.min-1 and ive been asked to find the activity of the enzyme in micromoles product formed per min per mg of enzyme how do i do this i have 10 micro litres of a 5mg

  22. Chemistry

    ive calculated the amount of change for an enzyme controlled reaction as 1.5625 x 10^-8 mol.min-1 and ive been asked to find the activity of the enzyme in micromoles product formed per min per mg of enzyme how do i do this i have 10 micro litres of a 5mg

  23. chemistry please help

    ive calculated the amount of change for an enzyme controlled reaction as 1.5625 x 10^-8 mol.min-1 and ive been asked to find the activity of the enzyme in micromoles product formed per min per mg of enzyme how do i do this i have 10 micro litres of a 5mg

  24. physics/chem

    ive calculated the amount of change for an enzyme controlled reaction as 1.5625 x 10^-8 mol.min-1 and ive been asked to find the activity of the enzyme in micromoles product formed per min per mg of enzyme how do i do this i have 10 micro litres of a 5mg

  25. Biology

    Briefly describe what effect you expect each of the following variables to have on enzymatic activity. 1. pH of 3.0 2. decrease in temperature 3. increase in substrate concentration 4. increase in enzyme concentration 5. addition of phenylthiourea(PTU)

  26. Chemistry

    Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

  27. Need guidance on how to solve Michaelis Menten

    The question is below. If someone could at least give me an idea of where to start, or some steps of how I should go about solving this problem, I would be so extremely grateful. Thank you! You isolate an enzyme from teddy bear liver. The enzyme catalyzes

  28. Kim

    In an experiment to show the relationship between substrate concentration and activity of enzymes, why do we add a 0.5 of a 5 pH buffer solution to the enzyme test groups? the test tubes that we use to stop the reaction at specific times are basic

  29. Biology--check

    1. What happens if a toxic substance interferes with monomers in the tertiary or quaternary structures? a.The molecular reaction is delayed or inhibited due to denaturation of the enzyme. *** b. the reaction will speed up c.the reaction will slow down and

  30. Chemistry

    Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas

  31. Biochemistry

    Suppose that a mutant enzyme binds a substrate 100 times as tightly as does the native enzyme. What is the effect of this mutation on catalytic rate if the binding of the transition state is unaffected?

  32. calculus

    Previously asked: the length of a rectangular prism is increasing at a rate of 8 cm/s, its width is increasing at a rate of 3 cm/s, and its height is increasing at a rate of 5 cm/s. when the length is 20 cm, width is 10 cm, and height is 15 cm, how fast is

  33. science

    What is the unit for measuring enzyme activity? What is turnover number

  34. Biology

    1. A famous scientist once said that wherever in the universe life exists, some of those life-forms must be colored. Why would the scientist make such a statement? 2. One of the accessory pigments used in photosynthesis is beta-carotene, a carotenoid found

  35. chemistry please help

    An enzyme sample contains 24 mg protein/mL. Of this sample, 20 microliters in a standard incubation volume of 0.1 mL catalyzed the incorporation of glucose into glcogen at a rate of 1.6 nmol/min. Calculate the velocity of the reaction in terms of the

  36. biochemistry

    An enzyme sample contains 24 mg protein/mL. Of this sample, 20 microliters in a standard incubation volume of 0.1 mL catalyzed the incorporation of glucose into glcogen at a rate of 1.6 nmol/min. Calculate the velocity of the reaction in terms of the

  37. biology

    What is the effect of enzyme concentration on enzyme activity? Explain how enzyme activity changes as enzyme concentration decreases, and discuss why this occurs (on a molecular level).

  38. repost bio

    What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain on a molecular basis. I am not sure what the question wants from me. Would this be right, and is there anything

  39. factors which influence

    List three different factors which influence the rate of enzyme activity and specifically explain each factor’s influence on enzyme activity. Since enzymes are protein, they are very sensitive to environmental conditions. The very nature of large 3-

  40. Biology

    What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain your observations by discussing this reaction on a molecular level.

  41. Bio

    16. Name some biological processes that are affected by temperature. Cellular Respiration Homeostasis Enzyme Activity Heart Rate Can anyone please suggest more?

  42. bio

    so the question is : List three different factors which influence the rate of enzyme activity and specifically explain each factor’s influence on enzyme activity. My answer: Since enzymes are proteins, they are very sensitive to environmental conditions.

  43. ap biology

    i need help with this quewstion but i cannot post the graph i some one could help if you would like to give me your email and i will send it there. it would be great please i really need help * how do (1) temperature and (2) pH affect the activity of this

  44. biology

    an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the pH of the environment is changed. Which of the following best summarizes the effect of pH on the enzyme? A. pH changes the shape of the enzyme. B. pH takes energy away

  45. science

    1. In an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the pH of the environment is changed. Which of the following best summarizes the effect of pH on the enzyme? A. pH changes the shape of the enzyme. B. pH takes energy

  46. Chemistry

    1. How is the rate affected by doubling the concentratino? 2. Explain the effect of concentration on the rate of a reaction in terms of the "Collision Theory" of chemical reactions. 3. Considering that 1/Time is proportional to the rate of the reaction how

  47. Chemistry - Concentration and Time

    1. How is the rate affected by doubling the concentratino? 2. Explain the effect of concentration on the rate of a reaction in terms of the "Collision Theory" of chemical reactions. 3. Considering that 1/Time is proportional to the rate of the reaction how

  48. Physiology

    Indicate whether the following circumstances would tend to increase, decrease or have no effect on the rate of enzyme activity. 1.adding more substrate but keeping the amount of enzyme of the same 2.adding more enzyme but keeping the amount of substrate

  49. gr. 12 biology

    My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity respectively (seconds obviously, these are the times it took the

  50. gr. 12 biology

    My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity respectively (seconds obviously, these are the times it took the

  51. biology grade 12

    My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity (seconds obviously, these are the times it took the enzyme to

  52. Biology

    I need help in my biology lab... [Catalase Lab] 1.What effect did heat have on the activity of the enzyme? What effect did cold have? Room temperature? 2. What effect did lowering pH (making it acidic) have on the activity of the enzyme? What affect did

  53. Anatomy

    Which of the following is an example of a sympathetic nervous response? A voluntary movement of the upper limb B increasing salivation C increasing digestive enzyme secretion D increase in heart rate* E feeling the pain and temperature

  54. 9th Grade Biology

    You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A

  55. Chemistry

    This may help a little. Although this may appear to be all about temperature, read thourough it and note that temperature denatures the enzyme and how that affects the K and the Arrhenius equation. (Broken Link Removed) An enzyme gets denatured at high

  56. Chemistry (again)

    I need help with this question: Suppose you bake two cakes and the the one with twice as much baking powder raises twice as much. Is this proof of the relation between concentration and reaction rate? See I know concentration has an affect on reaction rate

  57. Cell Bio

    Sometimes, certain enzymes are associated with a particular organelle of the cell. Many times scientists have had to use ________________ centrifugation to separate different constituents of the cell. Following this procedure, you aliquot the fractions

  58. Chemistry

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

  59. Biology

    The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell. Which of the following changes is most likely to slow down this reaction? Adding more maltose molecules Increasing the volume

  60. Cell Bio

    Sometimes, certain enzymes are associated with a particular organelle of the cell. Many times scientists have had to use ________________ centrifugation to separate different constituents of the cell. Following this procedure, you aliquot the fractions

  61. Biology

    1. What happens if a toxic substance interferes with monomers in the tertiary or quaternary structures? a.The molecular reaction is delayed or inhibited due to denaturation of the enzyme. *** b. the reaction will speed up c.the reaction will slow down and

  62. science

    This is the hypothesis about the affect of inhibitors on enzyme: --If the competitive inhibitor presence, then it might cause the reaction to slow down due to some of the available enzyme sites are occupied by the inhibitor. --For noncompetitive inhibitor:

  63. science

    Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas

  64. Chemistry

    Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas

  65. biology

    The conversion of molecule S to product P has a Keq = 2.0. Two different, but related enzymes, A and B, can catalyze the reaction. The product P serves as an allosteric inhibitor of enzyme B, but not of enzyme A. A. 10 mM S is placed into three separate

  66. chemistry

    At body temperature (37°C), the rate constant of an enzyme-catalyzed decomposition is 3.0 × 108 times that of the uncatalyzed reaction. If the frequency factor, A, is the same for both processes, by how much does the enzyme lower the Ea?

  67. human biology!!!

    hi i have a big problem got a practical, the effect of catalase on the rate of reaction on hydrogen peroxide. but i don't know the amount of hydrogen peroxide i should use or the source of enzyme? can anyone help? the source of enzyme cant be liver or

  68. BIOLOGY/CHEMISTY

    a student uses the unduiluted glucose stock solution in a reaction and finds that the absorbance values over 90 seceonds are all 1.900. What does this result tell you abou the enzyme activity of glucose oxidase in this reaction after the 90 seconds time

  69. Chemistry

    a student uses the unduiluted glucose stock solution in a reaction and finds that the absorbance values over 90 seceonds are all 1.900. What does this result tell you abou the enzyme activity of glucose oxidase in this reaction after the 90 seconds time

  70. calculus: related rates

    hello, please help me. A cylindrical can is being heated with its height increasing at the rate of 0.01cm/min and its diameter at the rate of 0.005cm/min. At what rate is the volume increasing when the can has a diameter of 15cm and a height of 20cm. this

  71. Chemistry(Please check)

    1) The reaction A + B + C = products has a rate law rate = k times A times C squared. Which of the following will result in an increase in the rate constant for the reaction? #1 - increasing the temperature #2 - adding a catalyst #3 - doubling the

  72. Chemistry

    I'm supposed to calculate the rate equation, including k, for the reaction whose data is given in the table: Experiment: 1 2 3 Initial Concentration X: 0.10, 0.10, 0.60 Initial Concentration Y: 0.20, 0.10, 0.10 Measured Initial Rate: 2.57, 1.25, 1.27 (I

  73. chemistry

    Use activity coefficients to find the concentration of hydrogen ions in a solution of 90.0 mM butanoic acid and 0.05 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm. How do I calculate the

  74. BCMB

    Can anyone please help me how to calculate the turnover number? The enzyme reaction shown was performed in a 10 ml volume with a concentration of PDE5 of 0.1ug/ml. The enzyme has a molecular weight of 50000 and has one active site. Calculate the turnover

  75. Genetics/Bio

    In need of help for these two questions. Thank you in advance! Restriction Enzyme A has the recognition sequence 5′- CTGCAG -3′. Restriction Enzyme B has the recognition sequence 5′- GCGC -3′. Based on this information, you can infer that: A.

  76. Genetics/Bio

    In need of help for these two questions. Thank you in advance! Restriction Enzyme A has the recognition sequence 5′- CTGCAG -3′. Restriction Enzyme B has the recognition sequence 5′- GCGC -3′. Based on this information, you can infer that: A.

  77. Chemistry Eq. Question

    3H2(g) + N2(g) reverse reaction arrow 2NH3(g) What factors would affect the equilibrium constant for the reaction above? (Select all that apply.) increasing the H2 concentration decreasing the NH3 concentration increasing the temperature decreasing the

  78. Chemistry

    Name and describe two colligative properties that are affected by solute concentration, then list whyone would be affected in that manner. So this is what i put for my answer Lowers freezing point: Each additional level of molal concentration lowers the

  79. chemistry

    'enzyme oxidation of water' What enzyme is used and what is the enzyme's chemical compasition ?

  80. Biology / Biochemistry

    How will the conformation of an Enzyme (a protease) be affected when the amino acid residue is substituted with glutamate instead of glutamine?

  81. Calculus

    The side of a square box is increasing at a rate of 4mm/s and its height is increasing at a rate of 2mm/s. How fast is the volume increasing when the side is 40mm and the height is 100mm. Can someone just tell me what formula to use?

  82. science

    Explain how end product inhibition can control enzyme activity in living cells

  83. Chemistry

    A decomposition reaction if found to be first order with respect to the reactant. What is the relationship between the rate and concentration of the reactant? A) The rate is inversely proportional to the square of the concentration B) The rate is inversely

  84. Biology for school

    What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain on a molecular basis. I am not sure what the question wants from me. Would this be right, and is there anything

  85. biology

    substrate concentration and pH affect enzyme activity. Is there another environmental condition you think could affect enzyme activity How would you test your hypothesis?

  86. science

    How does substrate concentration affect enzyme activity. If you do not know the answer, please reply this question letting me know.

  87. science

    How does substrate concentration affect enzyme activity. If you do not know the answer, please reply this question letting me know.

  88. science

    What factors affect the function of an enzyme? pH, temperature, substrate concentration, as well as enzyme concentration are typical.

  89. Math

    Triose phosphate isomerase has a rate enhancement of 1.0x109. If the enzyme-catalyzed rate is 1500 nmol s-1, what would the reaction rate be without the enzyme? Convert your answer to nmol day-1 before entering. (Pay very close attention to units.)

  90. Biochemistry

    Triose phosphate isomerase has a rate enhancement of 1.0x109. If the enzyme-catalyzed rate is 1500 nmol s-1, what would the reaction rate be without the enzyme? Convert your answer to nmol day-1 before entering. (Pay very close attention to units.)

  91. science

    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?

  92. Biology

    OPEN ENDED: In a laboratory a scientist is experimenting with a synthetic enzyme called “hydrolase”. The goal of this enzyme is to bind to intracellular water and speed up hydrolysis RXNs within the cell, so that cells can break apart any polymer at a

  93. Biology

    What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

  94. Biology

    What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

  95. bio

    Why does changing the pH affect the enzyme activity?

  96. bio

    Regulation of an enzyme's activity occurs

  97. chemistry

    why the increasing in substrate concentration increase in the rate of reaction of enzymes.

  98. Biology

    why is protein folding important to enzyme activity?

  99. Biology

    why is protein folding important to enzyme activity?

  100. biology - temp on enzymes

    I have a practice question and I need some help on it because I am rather confused! 'Investigation into the effect of temperature on enzyme activity' -Casein is an insoluble milk protein found in powdered milks -Casein forms a whits suspension which clears

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