SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Textbook Question
Chapter 2, Problem 8CT
An enzyme (E) catalyzes the following reaction:
However, the product (C) binds to the active site of the enzyme in a reversible fashion and keeps the enzyme from functioning. What happens if A and B are continually added to a solution that contains a fixed amount of the enzyme?
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Students have asked these similar questions
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.
Consider an enzyme (P) that gets activated by forming a dimer (P2):
2P = P2
At 25 °C, we have AH- 19 kJ/mol and AS-65 kJ/mol, for this dimerization reaction. Identify the correct
statement.
O The enzyme is activated when kept at temp = +37 °C.
O The enzyme is activated at all temperatures.
O The enzyme is activated when kept in the fridge with temp = 4 "C.
O The enzyme can never be activated, no matter what the temperature is.
O None of the above statements is true.
Enzyme X has an optimal pH that is basic. If you were to design an experiment to determine the optimal pH for this enzyme, which of the following pH range(s) would you test and why?
pH 1-3
pH 3-5
pH 5-7
pH 7-9
pH 9-11
pH 11-14
Chapter 2 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 2.1 - Define matter. How are the mass and the weight of...Ch. 2.1 - Differentiate between element and atom. What four...Ch. 2.1 - Prob. 3AYPCh. 2.1 - Which subatomic particle determines the atomic...Ch. 2.1 - What is an isotope? How are isotopes denoted?Ch. 2.1 - What is avogardro’s number? How is it related to a...Ch. 2.1 - Describe how an ionic bond is formed. What are...Ch. 2.1 - What occurs in the formation of a covalent bond?...Ch. 2.1 - Distinguish between a molecule and a compund. Give...Ch. 2.1 - What are intermolecular forces, and how do they...
Ch. 2.1 - What is meant by the statement “table sugar is...Ch. 2.1 - Describe what occurs during the dissociation of...Ch. 2.1 - Explain the difference between electrolytes and...Ch. 2.2 - Using the terms reactant and product, describe...Ch. 2.2 - Contrast synthesis and decomposition reactions,...Ch. 2.2 - Describe the role of water in dehydration and...Ch. 2.2 - What is a reversible reaction? How does this type...Ch. 2.2 - What are oxidation-reduction reactions?Ch. 2.2 - Define energy. How are potential and kinetic...Ch. 2.2 - Summarize the characteristics of mechanical,...Ch. 2.2 - Use ATP and ADP to Illustrate the release or input...Ch. 2.2 - Define activation energy, catalyst, and enzymes;...Ch. 2.2 - What effect does increasing temperature or...Ch. 2.3 - What is the difference between inorganic and...Ch. 2.3 - What two properites of water are the result of...Ch. 2.3 - List and briefly describe the four functions that...Ch. 2.3 - Prob. 27AYPCh. 2.3 - Prob. 28AYPCh. 2.3 - Prob. 29AYPCh. 2.3 - Prob. 30AYPCh. 2.3 - Prob. 31AYPCh. 2.3 - Prob. 32AYPCh. 2.3 - Prob. 33AYPCh. 2.3 - Prob. 34AYPCh. 2.3 - What are the functions of oxygen and carbon...Ch. 2.4 - Prob. 36AYPCh. 2.4 - Prob. 37AYPCh. 2.4 - Prob. 38AYPCh. 2.4 - Prob. 39AYPCh. 2.4 - Which carbohydrates are used for energy? What is...Ch. 2.4 - Prob. 41AYPCh. 2.4 - Prob. 42AYPCh. 2.4 - Prob. 43AYPCh. 2.4 - Prob. 44AYPCh. 2.4 - Prob. 45AYPCh. 2.4 - Prob. 46AYPCh. 2.4 - What are the building blocks of proteins? What...Ch. 2.4 - Prob. 48AYPCh. 2.4 - Prob. 49AYPCh. 2.4 - Compare the lock-and-key and the induced fit...Ch. 2.4 - Prob. 51AYPCh. 2.4 - What are the basic building blocks of nucleic...Ch. 2.4 - DNA is like a twisted ladder. What forms the sides...Ch. 2.4 - Prob. 54AYPCh. 2.4 - Prob. 55AYPCh. 2.4 - Prob. 56AYPCh. 2.4 - Prob. 57AYPCh. 2 - Prob. 1RACCh. 2 - Prob. 2RACCh. 2 - Prob. 3RACCh. 2 - Prob. 4RACCh. 2 - Table salt (NaCl) is an atom organic. a molecule....Ch. 2 - Prob. 6RACCh. 2 - Prob. 7RACCh. 2 - Prob. 8RACCh. 2 - Prob. 9RACCh. 2 - Prob. 10RACCh. 2 - Prob. 11RACCh. 2 - Which of these statements concerning enzymes is...Ch. 2 - Prob. 13RACCh. 2 - Prob. 14RACCh. 2 - Prob. 15RACCh. 2 - Prob. 16RACCh. 2 - A buffer slows down chemical reactions. speeds up...Ch. 2 - Prob. 18RACCh. 2 - Prob. 19RACCh. 2 - Prob. 20RACCh. 2 - Prob. 21RACCh. 2 - Prob. 22RACCh. 2 - Prob. 23RACCh. 2 - DNA molecules conatin genes. contain a single...Ch. 2 - Prob. 25RACCh. 2 - Prob. 1CTCh. 2 - Prob. 2CTCh. 2 - A mixture of chemicals is warmed slightly. As a...Ch. 2 - Two solutions, when mixed together at room...Ch. 2 - Prob. 5CTCh. 2 - Prob. 6CTCh. 2 - Carbon dioxide that accumulates in the blood can...Ch. 2 - An enzyme (E) catalyzes the following reaction:...Ch. 2 - Using the materials commonly found in a kitchen,...
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- If the ATP-binding site of an enzyme is buried in the interior of the enzyme, in a hydrophobic environment, is the ionic interaction between enzyme and substrate stronger or weaker than that same interaction would be on the surface of the enzyme, exposed to water? Why?arrow_forwardWhich of the following is TRUE under the following conditions: the enzyme concentration is 2.5 nM, substrate concentration is 75 nM, the KM = 150 nM, and the Vmax = 20 nmol/min a) The rate of the reaction is 20 nmol/min! b) The rate of the reaction is between 10 nmol/min and 20 nmol/min. c) The rate of the reaction is 10 nmol/min. d) The rate of the reaction is below 10 nmol/min. e) The rate cannot be determined from the above information.arrow_forwardDefine the following term (in relation to enzymes) Products?arrow_forward
- Which of the following statements are true for BOTH the "transition state" and an "intermediate" of reaction? (This is a multi-select question, select all that apply.). Both are only observed in enzyme-catalyzed reactions. Both can be converted to product(s) or might decompose back to the reactant(s). Neither are part of the "net equation" for the reaction. Both contain covalent bonds are in the process of breaking and/or forming. Both are part of every chemical reaction. (i.e. the mechanisms of all chemical reactions, whether enzyme catalyzed or not, will have involve both a transition state and an intermediate).arrow_forwardAs 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.arrow_forwardwhich of the following is a primary function of the active site of an enzyme?arrow_forward
- Given: Your professor gives you a vial of enzyme and a vial of substrate. The product of this reaction is fluorescent and you can measure the concentration of the product as a function of time. (answer a, b, and c)a) Your professor tells you to quantify how much product is being produced per minute at thebeginning of the experiment. What exactly are you measuring?b) On the same plot, show the kinetic curve for an increased quantity of enzyme. Assume a 2x concentration. Indicate Km and Vmax.c) You don’t have a computer hand. Sad. How can you plot the data such that you can get important Michaelis-Menten values?arrow_forwardList three effects of macromolecular crowding on the properties of enzymes and the reactions they catalyze.arrow_forwardWhy must you only add the enzyme after all the other reagents have been added? Because until all reagents have been added the reaction mixture will not have the correct pH and/or ionic strength which may result in the enzyme been denatured and/or having reduced activity. Because until all reagents have been added the reaction mixture will not be at the correct temperature which may result in the enzyme been denatured and/or having reduced activity. Because until all reagents have been added the reaction mixture will not have the correct amount of substrate which may result in the enzyme not working optimally. Because the enzyme needs to be kept cold as long as possible, so it is not denatured and/or having reduced activity.arrow_forward
- Discuss an enzyme that acts as a catalyst in a biological system. What reaction(s) does it catalyze? What kinds of problems arise if the enzyme isn't working properly? In what ways is the enzyme's activity regulated? Other interesting facts about the enzyme? Don't forget to cite your source(s).arrow_forwardAn enzyme has a single active site at which it can bind and hydrolyze either X or Y; however, the enzyme cannot bind X and Y at the same time. Answer the following questions regarding the Km and Vmax of this enzyme. (a) Will the Km for X be affected if Y is present in the reaction mixture? Explain. (b) Will Vmax for X be affected if Y is present in the reaction mixture? Explain. (a) No, X competes with Y for binding, so the apparent Km for X will stay the same. (b) Yes, the Vmax for X will decrease in the presence of Y. (a) No, Y does not compete with X for binding, so the apparent Km for X will stay the same. (b) No, the Vmax for X will be unaffected by the presence of Y.arrow_forwardTwo substrates (A and B) are used to produce a certain biological product in an enzyme- catalyzed reaction. It is found that both substrates must bind to the enzyme, first Substrate A, then Substrate B before the product is produced. What kind of kinetic mechanism is described? Linear Reaction Ordered Sequential Reaction Random Sequential Reaction Ping Pong Reactionarrow_forward
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Enzyme Kinetics; Author: MIT OpenCourseWare;https://www.youtube.com/watch?v=FXWZr3mscUo;License: Standard Youtube License