Biology: Concepts and Investigations
5th Edition
ISBN: 9781260542202
Author: Marielle Hoefnagels
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 4.4, Problem 2MC
Summary Introduction
To determine:
How enzymes help in lowering the activation energy.
Concept introduction:
Enzyme is a proteinaceous molecule that acts as a catalyst inside the living organisms. The enzymes speed up the
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What is the activation energy for a reaction? Why is activation energy necessary?
What effect does an enzyme have on the required activation energy of a reaction?
Which of the following is not a mechanism that enzymes use to lower the activation energy of a reaction?
Chapter 4 Solutions
Biology: Concepts and Investigations
Ch. 4.1 - What are some examples of the work of a cell?Ch. 4.1 - Prob. 2MCCh. 4.1 - Prob. 3MCCh. 4.1 - Prob. 4MCCh. 4.2 - What is metabolism on a cellular level?Ch. 4.2 - Prob. 2MCCh. 4.2 - Prob. 3MCCh. 4.3 - What are the main parts of an ATP molecule?Ch. 4.3 - Prob. 2MCCh. 4.3 - Describe the relationships among endergonic...
Ch. 4.4 - Prob. 1MCCh. 4.4 - Prob. 2MCCh. 4.4 - Prob. 3MCCh. 4.4 - Prob. 4MCCh. 4.4 - List three conditions that influence enzyme...Ch. 4.5 - What is diffusion?Ch. 4.5 - What types of substances diffuse freely across a...Ch. 4.5 - Prob. 3MCCh. 4.5 - Prob. 4MCCh. 4.5 - Prob. 5MCCh. 4.5 - Prob. 6MCCh. 4.6 - How does a knifefish adjust its electric field?Ch. 4.6 - Prob. 2MCCh. 4 - Prob. 1MCQCh. 4 - Building proteins _____ energy; ATP hydrolysis...Ch. 4 - How does an enzyme affect the energy of a...Ch. 4 - Prob. 4MCQCh. 4 - Prob. 5MCQCh. 4 - Some people claim that lifes high degree of...Ch. 4 - List some examples of endergonic and exergonic...Ch. 4 - Why do electron transport chains release energy?Ch. 4 - Provide an example of an appliance that uses...Ch. 4 - Name at least four ways that a cell uses ATP.Ch. 4 - Use what you know about enzymes to propose an...Ch. 4 - Prob. 7WIOCh. 4 - Prob. 8WIOCh. 4 - Prob. 9WIOCh. 4 - Liver cells are packed with glucose. If the...Ch. 4 - Prob. 1PITCh. 4 - Prob. 2PITCh. 4 - Prob. 3PIT
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- If an enzyme does not alter the equilibrium constant of areaction, how does it speed up the reaction?arrow_forwardWhat is an energy of activation and what is the action of the enzyme over the energy of activation?arrow_forwarda) What is the Steady State assumption; how does steady state differ from equilibrium? b) Transition state; what are two ways that enzymes can decrease the transition state energy?arrow_forward
- What conditions in an environment can affect enzyme activity?arrow_forwardExplain with an example the statement: Enzymes enhance reactions but are not consumed in the reaction.arrow_forwardIn terms of potential and kinetic energy where does the energy comes from that allows an enzyme to lower the activation energy of a reaction? Is thermal energy involved?arrow_forward
- What is the role of binding energy in enzyme catalysis?arrow_forwardCatalysis involves overcoming the activation energy barrier of a reaction. What are three ways by which enzymes can do this?arrow_forwardHow do enzymes reduce the amount of activation energy needed to make a chemical reaction go?arrow_forward
- What is the mechanism that controls the rate of a reaction catalyzed by an enzyme?arrow_forwardAlthough ATP supplies energy to an endergonic reaction, why is it not considered a fuel?arrow_forwardHow does INCREASING temperature affect the rate of reaction (how fast the reaction occurs)? HINT: there are TWO effects.arrow_forward
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