Energy is defined as O the relative amount of disorganization in the universe. O the ability to do work. O the substances that participate in a reaction. O a protein that catalyzes a reaction. O the sum of all chemical reactions in a cell.
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Energy use is a universal property of life. Without energy, cells would not be able to build the molecules they need to work, live, grow, and reproduce. Practice your understanding of energy concepts matching the concepts on the left with the descriptions on the right. A. Energy B. Potential Energy C. Kinetic Energy D. Metabolism Energy seen in a moving object The capacity to do work or perform an action All the chemical reactions performed by an organism The energy in an object located in one place Question #2 Provide three examples for each of the following: A. Potential Energy: B. Kinetic Energy: Question #3 - Write in the words that complete the following two statements. A. Cells build larger molecules from smaller ones through ______ reactions. From a thermodynamics point of view, these molecules require an energy input and are also known as ______ reactions. B. Cells are also capable of breaking down large molecules into smaller ones through ______ reactions. The breaking of larger molecules releases free energy. In thermodynamics, such reactions are called ______ reactions. C. Cells are in constant need of energy because with every chemical reaction, there is an energy transfer from one molecule to another causing an increase in disorder. What physics law explains this loss of energy and increase in disorder? Question #4 - Construct (synthesize) a definition of enzyme that must include the following words: Enzyme, catalyst, activation energy, reactions, speed. Your answer must be in your own words. Your definition:
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Entropy is defined as: a. the heat transferred at constant pressure. b. the sum of heat absorbed and work done. c. the pressure change at constant temperature. d. the measure of disorder in a system. e. none of the above. Question 3 of 38: Consider the reaction A + B <-> C + D. After equilibrium concentrations were measured: [a] = 10 µM, [b]
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