Which of the following statements about enzyme function is FALSE? Enzymes change shape permanently after a reaction, and can’t be re-used. Enzymes are types of proteins. Enzymes are highly specific molecules. Enzymes lower the activation energy of a reaction. Enzymes bind to substrates a an area called the “active site."

Which of the following statements about enzyme function is FALSE? Enzymes change shape permanently after a reaction, and can’t be re-used. Enzymes are types of proteins. Enzymes are highly specific molecules. Enzymes lower the activation energy of a reaction. Enzymes bind to substrates a an area called the “active site."

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter6: Energy, Enzymes, And Biological Reactions

Section: Chapter Questions

Problem 1TYK: The capacity to do work best defines: a metabolic pathway. entropy. kinetic or potential energy. a...

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The capacity to do work best defines: a metabolic pathway. entropy. kinetic or potential energy. a chemical equilibrium. thermodynamics.
Which of the following statements is TRUE regarding the structure of enzymes? The shape of enzymes change to fit all types of substrates. O Enzymes are usually lipids. O Enzymes are denatured once they are used in a chemical reaction. O The active site is where the enzyme binds with the substrate.
All of the following are characteristics of the active site of an enzyme EXCEPT? It has less water content compared to the cytoplasm. It is found somewhere in the interior of the enzyme. It is the binding site for many different kinds of molecules. It has a complementary shape to its substrate.
Which statement describes enzyme inhibitors? O They bind to the active site of an enzyme and decrease its activity. O They block access to the substrate and slow the rate of the reaction. O They change the shape of an enzyme reducing its ability to bind efficiently. All of the above.
Which of the following statements is false regarding an enzyme's ability to catalyse a reaction? an enzyme provides a reaction surface and a hydrophilic environment for the reaction to take place an enzyme binds reactants such that they are positioned correctly and can attain their transition-state configurations an enzyme allows the reaction to go through a more stable transition state than would normally be the case an enzyme can weaken bonds in reactants through the binding process
Which of the following is correct regarding enzymes? Enzymes can speed up the rate of reaction by shifting the equilibrium of the reaction forward. Enzymes can make a nonspontaneous reaction spontaneous. Most enzymes are made up of DNA and RNA and are named based on the reaction that they catalyze. Enzymes can increase the rate of a reaction, but do not shift the equilibrium of a reaction.
All of the following are characteristics of the active site of an enzyme EXCEPT? Select the correct response. It has a complementary shape to its substrate. It is the binding site for many different kinds of molecules. It is found somewhere in the interior of the enzyme. It has less water content compared to the cytoplasm.
Which of the following statements is not true about enzymes? * Our bodies naturally produce enzymes The substance that the enzyme bind is called active site An enzyme may bind to two or more substrates giving the product. An enzyme may bind to one substrate giving more than one product.
Enzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes increase the rate of a reaction, but do not change the free energy of a reaction. Enzymes frequently work in metabolic pathways, such that the activity of one enzyme can affect the activity of a second enzyme in the pathway by altering the concentration of a substrate or product of the second enzyme. Enzymes will alter the equilibrium of a reaction such that the enzyme increases the exergonic reaction relative to the endergonic reaction. Even if the enzyme forms a bond with a substrate during a reaction, the enzyme returns to its original form at the end of the reaction.
Question 4 The main function of catalase is to break bonds between amino acids in proteins and aid in digestion break bonds between monosaccharides in starch and aid in digestion break down hydrogen peroxide into oxygen and water cause browning of fruits and vegetables when they are cut or damaged Question 5 What happens to an enzyme when it is denatured? Its 3D shape changes and it can no longer catalyze the reaction. It modifies the shape of the active site and increases the rate of reaction under optimal conditions. Its 3D shape and all levels of its structure are disrupted, so it can no longer catalyze the reaction. O Its primary structure is disrupted and the enzyme breaks down, making it unable to catalyze the reaction. 1 pts 0.75 pts
What are the steps for an enzyme to create a product in order: The energy of activation is lowered so the reaction can happen quicker. Substrate attaches to the active site. The product is created and released from the active site. The energy of activation is lowered so the reaction can happen slower. A specific substrate attaches to the active site.
A transition-state analog— resembles the active site of general acid-base enzymes. is less stable when binding to an enzyme than the normal substrate. stabilizes the transition state for the normal enzyme-substrate complex. reacts more rapidly with an enzyme than the normal transition state intermediate. resembles the transition-state structure of the normal substrate in the enzyme-substrate complex.