Biology: Science For Life With Physiology Plus Mastering Biology With Pearson Etext -- Access Card Package (6th Edition) (what's New In Biology)
6th Edition
ISBN: 9780134794679
Author: BELK
Publisher: PEARSON
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Chapter 4, Problem 6LTB
Summary Introduction
Introduction:
Activation energy is the minimum amount of energy which is required to start a
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Which of the following statements is NOT true?
None of the other four answers (all are true)
The energy required to cause a chemical reaction to occur is called the activation energy
Decomposition (degradation, catabolic) reactions are usually endergonic
Chemical reactions in living cells are catalyzed by enzymes
Enzymes increase the probability that a chemical reaction will take place by lowering the activation energy
Which of the following do enzymes change?∆G ; reaction rate; types of product generated; activation energy; the laws ofthermodynamics.
Uncoupling proteins act to ______ in Bioenergetics
Group of answer choices
Lower the energy of activation
reduce oxidative phosphorylation
increase the entropy of a bioenergetic pathway
decrease enzyme activity
Chapter 4 Solutions
Biology: Science For Life With Physiology Plus Mastering Biology With Pearson Etext -- Access Card Package (6th Edition) (what's New In Biology)
Ch. 4 - What is meant by the term induced fit?Ch. 4 - Prob. 2LTBCh. 4 - What are the reactants and products of cellular...Ch. 4 - Which of the following is a false statement...Ch. 4 - Enzymes speed up chemical reactions by...Ch. 4 - Prob. 6LTBCh. 4 - Prob. 7LTBCh. 4 - The electron transport chain ___________. is...Ch. 4 - Most of the energy in an ATP molecule is released...Ch. 4 - Anaerobic respiration ___________. generates...
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- Enzymes _______. a. enhance reaction rates b. are affected by pH c. act on specific substrates d. all of the abovearrow_forwardWhich of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.arrow_forwardEnzymes are not used up in chemical reactions, so what exactly does an enzyme do? Refer to activation energy (transition state etc)arrow_forward
- Which of the following statements are incorrect? Enzymes and inorganic catalysts speed up reactions. Enzymes and inorganic catalysts are non-specific. Enzymatic activity can be regulated. Enzymes undo allosteric change and inorganic catalysts cannot.arrow_forwardWhich of the following is/are TRUE of an enzyme? Enzymes lower the release of free energy Enzymes are not consumed in a reaction Not all enzymes are proteins Enzymes only affect endergonic reactions Enzymes only affect exergonic reactionsarrow_forwardHomeostasis is important for all of the functions of the human body. Why is maintaining homeostasis important for enzymes? Group of answer choices: To maintain their normal structure and function To prevent substrate from binding to the enzyme To allow the substrate to bind forever To cause the enzyme to fold differently for each reactionarrow_forward
- What ultimately powers the synthesis of ATP in cells? Group of answer choices Electrochemical potential of ion gradients across membranes Oxidation of fuel molecules Photosynthesis A and B All of the abovearrow_forwardWhich 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."arrow_forwardThe metamorphosis of a tadpole to an adult frog involves a thorough reconstruction of the animal's body. All of the structural and physiological changes must be complete or the frog will not survive this transformation. Which type of regulation would ensure that the animal completed its transformation? enzymatic catalysis feedback inhibition positive feedback negative feedback please helparrow_forward
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Anaerobic Respiration; Author: Bozeman Science;https://www.youtube.com/watch?v=cDC29iBxb3w;License: Standard YouTube License, CC-BY