Chemical Level of Organization

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Chapter 2: The Chemical Level of Organization Multiple Choice 1. a. b. c. d. e. 2. a. b. c. d. e. 3. a. b. c. d. 4. a. b. c. d. e. 5. a. b. c. d. e. 6. a. b. c. d. e. 7. a. b. c. d. e. 8. a. b. c. d. What are the major elements found in the body? Nitrogen, oxygen, calcium, sodium Hydrogen, carbon, phosphorus, calcium Carbon, hydrogen, oxygen and nitrogen Oxygen, nitrogen, potassium, calcium Potassium, phosphorus, sodium, hydrogen The subatomic particles that make up atoms include: Neutrons, quarks, muons Protons, neutrons, electrons Muons, positons, neutrons Electrons, quarks, protons Positons, protons, neutrons Which of the following particles has a neutral charge? Neutron Electron Proton All of the above What region of an atom contains the protons and neutrons? Cloud Nucleus Element Ring Shell This is the number of protons or electrons. Mass number Atomic number Isotope Valence shell None of the above As an atoms nucleus decays, it will emit radiation. This is seen in Compounds Cations Anions Isotopes Molecules This refers to the atomic weight of all naturally occurring isotopes of an element. Mass number Atomic number Atomic mass Ionic mass Covalent mass Which of the following particles plays a role in creating chemical bonds? Neutron Electron Proton All of the above

Dr. D.

Houston Community College

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9. a. b. c. d. e. 10. a. b. c. d. e. 11. a. b. c. d. e. 12. a. b. c. d. e.

This is a negatively charged atom. Superoxide Isotope Catalyst Ion Valence Which of the below provide an electrical current?. Isotope Ionic molecule Compound Electrolyte Valence molecule This type of bond requires a sharing of electrons. Covalent Ionic Hydrogen Atomic Electronic This is the type of bond between the atoms forming water Nonpolar covalent Polar covalent Hydrogen Ionic Atomic

13. Which of the following bonds provides the three dimensional structure of large molecules like proteins and DNA? a. Nonpolar covalent b. Polar covalent c. Hydrogen d. Ionic e. Atomic 14. a. b. c. d. e. 15. a. b. c. d. e. 16. a. b. c. d. e. This occurs when new bonds form or old bonds break between atoms. Ions Electrolytes Isotopes Chemical reaction Compounds This is defined as the capacity to do work. Metabolism Electrolytes Chemical reaction Concentration Energy This type of reaction will absorb more energy that it releases. Exergonic Endergonic Potential Kinetic Activation

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Houston Community College

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17. a. b. c. d. e. 18. a. b. c. d. e. 19. a. b. c. d. e. 20. a. b. c. d. e. 21. a. b. c. d. e. 22. a. b. c. d. e. 23. a. b. c. d. e. 24. a. b. c. d. e.

An enzyme acts to Raise the activation energy needed Lower the activation energy needed Convert the activation energy into potential Convert the activation energy into kinetic Break a chemical reaction This type of reaction will combine reactants to produce larger products. Synthesis Decomposition Potential Exchange Activated This type of reaction will break larger reactants to produce smaller products. Synthesis Decomposition Potential Exchange Activated This is the most abundant and most important inorganic compound in the body. Water Oxygen gas Carbon dioxide Glucose DNA A solute that dissolves in water is. Hydrophobic Hydrostatic Hydroamoure Hydrophillic Hydrozone In a typical body solution, the solvent is. Glucose Lipids Carbon dioxide Water Electrolyte A solution with a pH value smaller than 7 would be a(n) Base Salt Acid alkaline concentrate A substance that adds or removes Hydrogen ions from a solution is a(n) Base Salt Acid alkaline buffer

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Houston Community College

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25. a. b. c. d. e.

Which of the following is considered a proton donor? Acid Base Salt Organic compound Colloid

26. These are specific arrangements of atoms that confer characteristic chemical properties upon organic molecules. a. Acids b. Bases c. Carbons d. Functional groups e. Isomers 27. a. b. c. d. e. 28. a. b. c. d. e. 29. a. b. c. d. e. Glucose and...
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