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

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter22: Biochemistry

Section: Chapter Questions

Problem 62E

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Similar questions

. Describe the lock-and-key model for enzymes. Why are the shapes of the enzyme and its substrate important in this model? What does it mean to say that an enzyme is inhibited by a particular molecule? What happens if this inhibition is irreversible? Can you think of a situation in which it might be advantageous to be able to inhibit an enzyme?
Most human enzymes function best in the temperature range of: a. 0C10C b. 10C25C c. 25C40C d. 40C55C
List two ways that enzyme catalysis of a reaction is superior to normal conditions.
Describe the difference between graphs showing temperature versus reaction rate for an enzyme-catalyzed reaction and an uncatalyzed reaction.
Compare the lock-and-key and induced-fit models for substrate binding to an enzyme.
In the multienzyme sequence shown below, molecules of D are able to fit to the enzyme E1 and prevent the conversion of A to B. What is this action of E called? AE1BE2CE3D a. effector inhibition b. allosteric inhibition c. feedback inhibition d. competitive inhibition by nonproduct
The human body has an average pH of about 7 and a temperature of about 37C. Use graphs to illustrate enzyme activity in the human body as a function of the following: a. Substrate concentration b. Enzyme concentration c. pH include pH optimum value d. Temperature include temperature optimum value
The site on an enzyme molecule that does the catalytic work is called the: a. binding site. b. allosteric site. c. lock. d. active site.
Describe the importance of zymogens in the body. Give an example of an enzyme that has a zymogen.
As you increase the temperature of an enzyme-catalyzedreaction, the rate of the reaction initially increases. It thenreaches a maximum rate and finally dramatically declines.Keeping in mind that enzymes are proteins, how do youexplain these changes in reaction rate?
38- List two factors that can affect the rate of an enzyme-catalyzed reaction. No need for a paragraph, or even two sentences. Just the factors.
Enzymes are remarkably efficient catalysts that can increase reaction rates by as many as 20 orders of magnitude.(a) How does an enzyme affect the transition state of a reac-tion, and how does this effect increase the reaction rate?(b) What characteristics of enzymes give them this tremendous effectiveness as catalysts?