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Forms of energy

quiz 9

Subject: 
Biology
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metabolism
Medicinal chemistry
Chemical reaction
Chemistry
energy
Catabolism
Enzyme catalysis
Enzyme
Catalysis
Forms of energy
Endergonic
Polymer

Which of the following is (are) true of ligand-gated ion channels? a. They lead to changes in sodium and calcium concentrations in cells. b. They are important in the nervous system. c. They open or close in response to a chemical signal. d. Only A and B are true. e. A, B, and C are true. Which of the following can affect the rate of an enzymatic reaction a. pH b. temperature c. feedback inhibition d. A and B e. A, B and C A competitive inhibitor binds to an enzyme's a. active site b. allosteric binding site c. cooperative binding site d. A and B e. A, B and C Enzymes speed up chemical reactions by a. raising the energy of activation b. lowering the energy of activation c. lowering free energy d. increasing free energy e. B & D

Bob Jones PPT Notes -- Chapter 2b

Subject: 
Chemistry
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Physics
thermodynamics
Chemistry
State functions
Thermodynamic entropy
Heat transfer
Philosophy of thermal and statistical physics
Thermal energy
energy
Temperature
Entropy
Forms of energy
Environment

Energy and Matter Energy Energy the ability to do work Work Work a force moving matter through a distance Both energy and work are measured in joules (J). Forms of Energy Mechanical ? objects Kinetic ? moving Potential ? stored Thermal ? kinetic energy of atoms and molecules Forms of Energy Acoustic (sound) ? periodic, wave-like motion of atoms and molecules Electromagnetic ? moving electrons Chemical ? breaking and forming bonds Forms of Energy Nuclear ? from center of atom 6 Energy Conservation Despite Change ?the study of the flow of energy? Thermodynamics ?the law of conservation of mass-energy? (Conservation doesn?t refer to turning off the lights.) First Law of Thermodynamics ?the law of conservation of mass-energy?

Physics Practice Problems

Subject: 
Physics
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Physics
energy
Introductory physics
Forms of energy
Classical mechanics
Physical quantities
State functions
Kinetic Energy
Potential Energy
Work
Force
Mass–energy equivalence

CHAPTER 6 REVIEW NAME_________________________________________ 1) Can work be done on a system if there is no motion? A) Yes, if an outside force is provided. B) Yes, since motion is only relative. C) No, since a system which is not moving has no energy. D) No, because of the way work is defined. Answer: D Diff: 1 Type: BI Var: 1 Page Ref: Sec. 6.1 3) If you push twice as hard against a stationary brick wall, the amount of work you do A) doubles. B) is cut in half. C) remains constant but non-zero. D) remains constant at zero. Answer: D Diff: 1 Type: BI Var: 1 Page Ref: Sec. 6.1
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