ppp26. Why aren't strong bonds as useful for work in the cell?27. Define chemical equilibrium with regards to reaction concentrations and how a reaction will proceed in thecell (i.e. if starting from 1 M of reactants/products with a Kg of 100).ON

Since we are entitled to answer only one question at a time, I would be answering the ques. 26. If…

Answered: ppp 26. Why aren't strong bonds as…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 8RQ: Which of the following is the best way to judge the relative activation energies between two given...

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н P OH `OH ÓH но OH write mechanisms for reaction shown by drawing each step. Not all cofactors may be indicated, use them as necessary. Disregard stereochemistry.
or 41. Why are ATP's phosphoanhydride bonds high energy? Why is ATP hydrolysis to be so favorable?
4.35 ll LTE O Question 5 1 pts Watch how the enzyme does the chemical reaction. Without this enzyme, the substrate can't turn into the broken product! Products Look at the picture below and describe the enzyme-catalyzed reaction. Site Enzyme-substrate complex Enzyme Product Enzyme 1. The substrates bond to the enzyme's product 2. A structure known as an "enzyme-substrate complex" is formed when they are connected. 3. The enzyme has turned the substratęs into a(n) [ Select ]
kcat = ? an enzyme has an aspartic acid in the active site with a pKa = 4.0 and the kcat for this enzyme is directly proportional to the fraction of this side chain that is ionized. If the kcat at pH = 4.0 is 52.9x103 s-1 what is the kcat for this enzymes at pH 3.5
31. Which process is involved in synthesizing complex molecules from simpler ones using energy? Group of answer choices metabolic catabolic anabolic hydrolytic
2.1 The Na'/K' pump is constantly working to push sodium out and potassium into the cell. What role does ATP play in the working of this pump? What do you think would happen to the cell did not have enough ATP to power the pump? 3. Enzymes. Enzymes act as a catalyst to speed up many biochemical reactions. This means that they will lower the energy needed to start a reaction. 3.1 In the picture below label the following: substrate, active site, enzyme, product. Briefly explain what is happening in each picture (figure 6.16 will be VERY helpful).
2) A. What is meant by energetic coupling? What is meant by the term phosphorylation and what role does phosphorylation play in energetic coupling? B. Describe at least one actual example of energetic coupling.
Describe 10 important biochemical properties of enzymes.
1. Calculate the pH of a 0.05 M solution of HCl. 2. Calculate the pH of a 0.1 M solution of NaOH. 3. Calculate the pH of an acetic acid solution in which [CH3COO - ] = 0.037 M and [CH3COOH] = 0.044 M. (pKa = 4.76) 4. You are conducting a biochemical experiment with an enzyme that has optimal activity at pH = 10.00. You decide to use carbonate (pKa1 = 6.38, pKa2 = 10.30) as the buffer to keep the pH stable throughout the enzymatic reaction. (Recall that the formula for carbonic acid is H2CO3.) You prepare a 0.5 M solution of carbonate buffer at pH = 10.00. Calculate the concentrations of the major carbonate species in your solution. 5. Calculate the pH of the buffer solution in which [H3PO4] = 0.038 M and [H2PO4 - ] = 0.046 M (pKa1 = 2.12, pKa2 = 7.21, pKa3 = 12.32). 6. Add 5.0 mL of 0.1 M NaOH to 80 mL of buffer from question 5 and calculate the pH.
47. Which of the following is true under the following conditions: The enzyme concentration is 5 nM, the substrate concentration is 5 mM, and the KM is 5 mM. (1 nM = 10-9 M, 1 μM=10-6 M, 1 mM = 10-3 M) Group of answer choices Between 0% and 50% of active sites have substrate bound 0% of active sites have substrate bound 50% of active sites have substrate bound 100% of active sites have substrate bound Between 50% and 100% of active sites have substrate bound
19. Define the terms “cofactor” and “coenzyme.” 20. What is the difference between general acid-base catalysis and specific acid-base catalysis? (Assume that the solvent is water.)
3.1 In the picture below label the following: substrate, active site, enzyme, product. Briefly explain what is happening in each picture (figure 6.16 will be VERY helpful). 3.2 Below is a graph showing how enzymes affect the energy of a reaction. Label the following in the graph (reactants, products, activation energy with no enzyme, activation energy with enzymes, time, energy)

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ppp 26. Why aren't strong bonds as useful for work in the cell? 27. Define chemical equilibrium with regards to reaction concentrations and how a reaction will proceed in the cell (i.e. if starting from 1 M of reactants/products with a Kg of 100). ON