An enzyme A is most active at pH 5. Which of the following change will increase the activity of A? Question 18 options: Increasing the pH from 5 to 7 Increasing the pH from 3 to 5 Decreasing the pH from 5 to 2
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An enzyme A is most active at pH 5. Which of the following change will increase the activity of A?
Question 18 options:
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Increasing the pH from 5 to 7 |
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Increasing the pH from 3 to 5 |
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Decreasing the pH from 5 to 2 |
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- Based on the given question which of the following choices is the correct answer?A. The enzyme's activity continually increases as pH increases from 5.0 to 9.0B. The optimum pH of the enzyme is 5.8C. The optimum pH of the enzyme is 6.6D. The enzyme's activity is greater around pH of 8.0 than around pH of 5.0A patient had severe acid reflux symptoms and decided to take the antacid, Amphojel (aluminum hydroxide). Answer both parts. If this is an oxidation-reduction (redox) and/or precipitation reaction, then show work to support your answer. If this is not an oxidation-reduction (redox) and/or precipitation reaction, then show work to support your answer. Assume that Calcium Iodide and Sodium Oxalate are the starting substances (reactants) in the reaction: What type of reaction(s) is/are being represented by the chemical reaction?Figure #1 and #2 show the results collected from a fun enzyme activity lab that did NOT involve the liver;) Answer the questions that follow. REACTION RATE (mg/sec) -1 m O 0 1 2 3 4 5 6 Rate of Reaction Enzyme A Rate ofreaction pH Figure #1 pH and enzyme reaction rate 0 10 7 8 9 10 11 12 13 14 Enzyme B Temperature 35 40 Enzymes A and B Figure # 2 The effect of temperature (°C) on enzyme activity a. Looking at these results, could these enzymes (A and B) be found somewhere in the human body? If so, where? Explain your answer, and be sure to discuss both factors (pH and temperature) as they relate to enzyme activity/rate of reaction.
- Enzymes are important molecules in biochemistry that catalyze reactions. The energy diagram illustrates the difference between a catalyzed reaction and an uncatalyzed reaction. Label the energy diagram. Answer Bank activation energy reactants (substrate) free energy reaction progress transition state uncatalyzed reaction catalyzed reaction AG for reaction productsAn enzyme has a single active site at which it can bind and hydrolyze either X or Y but the enzyme cannot bind X and Y at the same time. Which of the following statements are TRUE? Multiple answers: Multiple answers are accepted for this question Select one or more answers and submit. For keyboard navigation. SHOW MORE The Km for X will be affected if Y is present in the reaction mixture. a Y is a competitive inhibitor of X. The Km for X will increase. d The Vmax for X will be affected if Y is present in the reaction mixture. pH dependence of Vmax reflects the ionization state of catalytic site residues. e Consider the following: X and Y are methanol (poisonous) and ethanol respectively. If the Km for X= 0.01 M and the Km f for Y = 0.001 M then 0.01 M Y is 10 times the concentration of Y required for 0.5 Vmax. Addition of an enzyme to a chemical reaction increases the ratio of products to reactants (Ken). A mutation in the active site of an enzyme resulting in a large increase in…If an enzyme has a maximal activity of pH 6.8 and your reaction buffer is a pH 5.8, what do you need to do to increase the activity of the enzyme? add a dilute solution of sodium hydroxide to the reaction buffer to decrease the pH. add a dilute solution of sodium hydroxide to the reaction buffer to raise the pH. add a dilute solution of acid to the reaction buffer to raise the pH. add a dilute solution of acid to the reaction buffer to decrease the pH.
- An enzyme will work best in its optimum ( most favorable) pH, which is different for every enzyme. True or falseAn enzyme is present at 100 nM (nanomolar) and has a Vmax value of 25 uM/s (micromolar/second). The Km for the substrate is 5.2 uM. What is the kcat value? Report your answer to three significant figures in units of 1/s. Do NOT include the units in your answer.a MD order 15 millimoles of potassium phosphate (MW 136). How any milligrams are need for this does. **Do not round your answer**
- The rate of removal of alcohol from the bloodstream stays the same, regardless of the concentration of blood alcohol. What term do we use to describe this reaction rate law? A A first order reaction B A zeroth order reaction C A complex order reaction D A second order reactionStudents did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below. The Effect of pH on Enzyme Activity B 1. Acid 7. Base 14 pH A valid conclusion based on the information in the graph is that the pH of some enzymes changes as the temperature changes a difference in the pH of an environment changes enzyme activity enzymes change color in proportion to the rate of activity enzyme activity causes acids to change into bases over time Relative Rate of Enzyme ActivityAs an intermediate step in making the enzyme solution, you need to prepare Buffer X using the stock solutions of each chemical. Describe how you would make 100 mL of buffer X that has the following concentrations and pH: 50mM NaCl, 20mM Tris, 5mM MgCl2, pH 7.5 You do this starting with stock solutions of 1M NaCl, 1M Tris, 1M MgCl2, and water and a pH meter.