pls answer both asap 22. Which of the following statements about enzymes is true?a. they are made of lipids and control the rate of chemical reactionsb. they control the rate of chemical reactions by changing the temperaturec. they catalyze reactions by increasing the activation energyd. they catalyze reactions by decreasing the concentration of solutee. they catalyze reactions by decreasing the activation energy23. What type of chemical reaction is illustrated by the following reaction?CH3OOCH3 + H₂O CH3OOH + CH3OHa. oxidation/reductionb. substitutionc. neutralizationd.hydrolysise. dehydration synthesis (condensation)5

Step 1:22. The correct statement about enzymes is:(e) . they catalyze reactions by decreasing the…

Answered: 22. Which of the following statements…

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 7RQ: Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?...

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Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.
8). Which statement best describes 1 point the enzyme represented in the graphs? O 10 20 30 40 50 60 O 2 4 6 10 12 Temperature ("C) PH (1) This enzyme works best at a temperature of 50°C and a pH of 12. (2) Temperature and pH have no effect on the action of this enzyme. (3) This enzyme works best at a temperature above 50°C and a pH above 12. (4) This enzyme works best at a temperature of 35°C and a pH of 8. Relative Rate of Enzyme Action Relative Rate of Enzyme Action
7. Which of the following statements is true about enzyme-catalyzed reactions? The reaction is faster than the same reaction in the absence of the enzyme b. The free energy change of the reaction is opposite from the reaction without the enzyme The reaction always goes in the direction toward chemical equilibrium d. Enzyme-catalyzed reactions require energy to activate the enzyme e. Enzyme-catalyzed reactions release more free energy than noncatalyzed reactions The following questions are based on the reaction A+B C+D Free Energy- A+B Progress of the Reaction C.D
26. AN ORGANIC COFACTOR IN A CONJUGATED ENZYME?A. NEITHER VITAMINS NOR MINERALSB. MINERALS C. VITAMINSD. BOTH VITAMINS AND MINERALS 27. WHICH OF THE FOLLOWING STATEMENTS CONCERNING COFACTORS IS INCORRECT?A. VITAMINS CANNOT BE COFACTORSB. SOME COFACTORS ARE METAL IONS C. COFACTOR IS THE NON-PROTEIN PORTION OF ENZYME D. CONJUGATED ENZYMES CONTAIN COFACTORS 28. WHICH OF THE FOLLOWING VITAMINS IS NOT A FAT SOLUBLE VITAMIN? A. VITAMIN E B. VITAMIN C C. VITAMIN A D. VITAMIN D 29. WHAT HAPPENS TO SUBSTRATE MOLECULES AT AN ENZYME ACTIVE SITE?A. ALWAYS REACT WITH OXYGEN B. UNDERGO CHANGE TO A DESIRED PRODUCTS C. BECOME CATALYST C ALWAYS REACT WITH OXYGEN B UNDERGO CHANGE TO A DESIRED PRODUCT D. BECOME COVALENTLY BONDED TO THE ENZYME D. BECOME COVALENTLY BONDED TO THE ENZYME 30. ACTION OF CHEMICAL WARFARE AND ORGANOPHOSPHATE INSECTICIDE ARE BASED ON?A. REVERSIBLE ENZYME INHIBITOR B. IRREVERSIBLE ENZYME INHIBITOR C. REVERSIBLE ENZYME ACTIVATOR D. IRREVERSIBLE ENZYME ACTIVATOR
5. Consider the reaction: | OH H H₂C-(CH₂) C C—C—SCOA HH H₂C-(CH₂) a. What kind of reaction is being performed here? b. What enzyme performs this reaction? OHO C—C—C—SCOA c. What cofactors, if any, are required for this reaction? H
3. Consider the reaction: H3C-(CH₂) H H C—C—C—SCOA HH H₂C-(CH₂) a. What kind of reaction is being performed here? b. What enzyme performs this reaction? -C—C—C—SCOA H H c. What cofactors, if any, are required for this reaction?
4. Consider the reaction: OH CH H3C O C H₂ a. What kind of reaction is being performed here? H3C C H₂ b. What enzyme performs this reaction? c. What cofactors, if any, are required for this reaction?
1. Below is a plot that shows the relative activity of a particular enzyme at various Answer the following questions about this graph. temperatures. Enzyme activity → 10 15 20 25 30 35 40 45 50 Temperature (°C). A. Why does the enzyme's activity increase between 10°C and 37°C? ( B. Why does the enzyme's activity decrease sharply after the temperature is raised above 37°C?(
on Which of the following statements about enzymes is CORRECT? Select one:* O A. Enzymes slow down chemical reactions so that they occur properly O B. Enyzmes are carbohydrates OC. Enzymes are specific for their substrate O D. Enzymes cannot be reused A substrate is: Select one: O A. A molecule that dissolves in a solvent O B. The molecule an enzyme acts on OC. A dissolving substance in a solution а a L O D
9. For the graph below, which arrow indicates the ACTIVATION ENERGY for an ENZYME CATYLIZED reaction? reactants e.g. CO, + H,O products H,CO, Reaction coordinate O A B. C. Energy
7. Consider the reaction: H3CC-CH₂-C—S-ACP H3C OH b. What enzyme performs this reaction? C-CH₂-C—S-ACP a. What kind of reaction is being performed here? c. What cofactors, if any, are required for this reaction?
1. Looking at the graph you should be able to explain every activity of every enzyme. Please describe each one of them. 1A: Why is Temperature and pH so important? When is an enzyme able to work properly

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