Which of the following statements are false. A. Peptide bonds are the only covalent bonds that can link two amino acids together in proteins. B. Inhibition of an enzyme either decreases Km or increases Vmax. C. Many membrane bound proteins have alpha helices comprised of nonpolar amino acids that span the membrane. D. Although living cells generate order (by surviving, growing and forming complex macromolecules), they do not defy the second law of thermodynamics. A and B A and C B and C А, В and C B and D

Which of the following statements are false. A. Peptide bonds are the only covalent bonds that can link two amino acids together in proteins. B. Inhibition of an enzyme either decreases Km or increases Vmax. C. Many membrane bound proteins have alpha helices comprised of nonpolar amino acids that span the membrane. D. Although living cells generate order (by surviving, growing and forming complex macromolecules), they do not defy the second law of thermodynamics. A and B A and C B and C А, В and C B and D

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 5RQ: Which of the following is not true about enzymes? a. They are consumed by the reactions they...

See similar textbooks

Similar questions

Choose the best description of an enzyme: (a) It allows a chemical reaction to proceed extremely fast. (b) It increases the rate at which a chemical reaction approaches equilibrium relative to its uncatalyzed rate. (c) It makes a reaction thermodynamically favorable.
Given: A 10,000L bioreactor may have 100 trillion cells. Let’s assume that this cell solution has the same density as water. (answer A, B, and C) A. What cell density is this (per kg)? B. What is the ratio of cell density in your body compared to that in a bioreactor? C. What is limiting cell densities in a bioreactor that your body has managed to overcome?
The relationship between the breakdown of macromolecules and the biosynthesis of macromolecules is most similar to the relationship between which of the following pairs of terms? The relationship between the breakdown of macromolecules and the biosynthesis of macromolecules is most similar to the relationship between which of the following pairs of terms? A.) exergonic and spontaneous B.) free energy and entropy C.) work and free energy D.) exergonic and endergonic
Define the term thermotropic phase transition and describe the main transition exhibited by lipid bilayers.
Which of the following is NOT true of enzymes? a) They may interact chemically with their substrates b) They may catalyze a reaction in both forward and reverse directions. c) They may alter Keq for the reaction that they catalyze. d) They may decrease the entropy of their substrates.
Which of the following statements best describes the role of the enteric coating on aspirin tablets, such as the 81 mg (baby aspirin) tablets marketed by Walmart under the Equate label? Question 13 options: A) The enteric coating affects the kinetics of dissolution of the aspirin tablet. B) The enteric coating affects the thermodynamics of dissolution of the aspirin tablet. C) The enteric coating affects both the thermodynamics and kinetics of the dissolution of the aspirin tablet. D) The enteric coating affects neither the thermodynamics nor the kinetics of the dissolution of the aspirin tablet.
Which of the following is true of the molecule pictured below? A) It will spontaneously form into biological membranes. B) It would be liquid at room temperature because it contains unsaturated fatty acids. C) It would be solid at room temperature because it contains only saturated fatty acids. D) It would be liquid at room temperature because it contains only saturated fatty acids. E) It would be solid at room temperature because it contains unsaturated fatty acids.
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.
A 10,000L bioreactor may have 100 trillion cells. Let’s assume that this cell solution has the same density as water a. How many cells per kilogram is this? b. How many cells does the typical human body have? c. What cell density is this (per kg)?
Individuals who develop scurvy suffer from sore and bleeding gums and loss of teeth. Which of the following describes the mechanism by which the vitamin C they are lacking acts to prevent this disease? Question 79 options: a) As a matrix for the deposition of minerals such as calcium and phosphorus b) As a coenzyme involved in collagen biosynthesis c) As an enzyme involved in ligament formation d) As an antioxidant that prevents tissue damage from free radicals
Which of the following statement about the enzyme thermodynamics is TRUE? a. Enzymes increase the activation barrier (∆G cat) of the products b. Enzymes decrease the activation barrier (∆G cat) of the products c. Enzymes decrease the free energy (∆G) of the products d. Enzymes decrease the free energy (∆G) of the reactants e. Enzymes increase the activation barrier (∆G cat) of the reactants
Which of the following statements concerning enzymes is TRUE? a. Enzymes can increase the equilibrium constant of a reaction by 1000-fold. b. The activity of many enzymes can be regulated. c. Many enzymes are consumed in the reactions they catalyze. d. The rate of enzymatic catalysis is independent of pH.