The disease Phenylketonuria (or PKU) occurs when the enzyme that helps to catalyze the conversion of the amino acid phenylalanine into non-harmful tyrosine is mutated and doesn't work as well (or at all). Phenylalanine will still break down into tyrosine by itself, because this is a favorable reaction. Why is the non-functional enzyme a problem? Explain in a 3. few sentences. mOH pe0 p oSH) d ls sw. (asae (a) H notase ors vol woind sidst no nbe sd tiw ps er mundiaps ueeg bus TH Eseo.o 888.0 4. Consider the following reaction, which is exothermic: 5.0 SEO O C2H4 (g) + Br2 (g) → C2H¾Br2 (g) ΔΗ 0 Predict the effect of each of the following perturbations (shift right/products, shift left/reactants, or no effect) using Le Chatelier's principle a. The reaction temperature is increased: b. The reaction volume is decreased: C. More bromine gas is added: d. The reaction is done in the presence of helium: e. C2H4BR2 is removed from the reaction vessel as it is being produced: f. The reaction is done in an ice bath instead of at room temperature: g. The reaction is done in the presence of a catalyst: nisloa Snodse1 pimisdioxa 1o almedtobns ns airlt al b

The disease Phenylketonuria (or PKU) occurs when the enzyme that helps to catalyze the conversion of the amino acid phenylalanine into non-harmful tyrosine is mutated and doesn't work as well (or at all). Phenylalanine will still break down into tyrosine by itself, because this is a favorable reaction. Why is the non-functional enzyme a problem? Explain in a 3. few sentences. mOH pe0 p oSH) d ls sw. (asae (a) H notase ors vol woind sidst no nbe sd tiw ps er mundiaps ueeg bus TH Eseo.o 888.0 4. Consider the following reaction, which is exothermic: 5.0 SEO O C2H4 (g) + Br2 (g) → C2H¾Br2 (g) ΔΗ 0 Predict the effect of each of the following perturbations (shift right/products, shift left/reactants, or no effect) using Le Chatelier's principle a. The reaction temperature is increased: b. The reaction volume is decreased: C. More bromine gas is added: d. The reaction is done in the presence of helium: e. C2H4BR2 is removed from the reaction vessel as it is being produced: f. The reaction is done in an ice bath instead of at room temperature: g. The reaction is done in the presence of a catalyst: nisloa Snodse1 pimisdioxa 1o almedtobns ns airlt al b

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Find an example of an enzyme that was NOT discussed in the book or video lectures. Answer the following questions about the enzyme that you chose. a) What is the chemical reaction that is catalyzed by the enzyme? b) Why is this enzyme/chemical reaction important to the organisms in which it occurs? Please post your source (include a link to the website you read your information)
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10. Applying the Michaelis-Menten Equation III A research group discovers a new version of happyase, which they call happyase*, that catalyzes the chemical reaction HAPPY = SAD. The researchers begin to characterize the enzyme. a. In the first experiment, with [E:] at 4 nm, they find that the Vmax is 1.6 µM s1. Based on this experiment, what is the kcat for happyase*? (Include appropriate units.) b. In the second experiment, with [E:] at 1 nm and [HAPPY] at 30 µM, the researchers find that Vo = 300 nMs. What is the measured Km of S %3D happyase* for its substrate HAPPY? (Include appropriate units.) c. Further research shows that the purified happyase* used in the first two experiments was actually contaminated with a reversible inhibitor called ANGER. When ANGER is carefully removed from the happyase* preparation and the two experiments are repeated, the measured Vmax in (a) is increased to 4.8 µM s, and the measured Km in (b) is now 15 µM. Calculate the values of a and a' for ANGER.…