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Colville: Evolve Resources for Clinical Anatomy and Physiology for Veterinary Technicians, 2nd edition Answers to Test Yourself Chapter 2: Chemical Basis for Life P 17 1. What is an element? 2. What is a chemical symbol? 3. Name the three subatomic particles. 4. What is the electrical charge of each particle? 5. Which particles are in the nucleus of an atom? 6. How many electron shells would an atom with four electrons have? ? P 19 1. What is a molecule? 2. How does an ionic bond differ from a covalent bond? 3. In what circumstance is a hydrogen bond commonly used? P 21 1. What is a chemical reaction? 2. What are the three types of chemical reactions? Mosby items and derived items © 2008 by Mosby, Inc., an affiliate of Elsevier Inc. Test Bank 2-2 3. The process of catabolism uses which type of chemical reaction? 4. What factors influence the rate of chemical reactions? P 22 1. What is the difference between organic and inorganic compounds? 2. Are only organic compounds necessary for life? 3. What are the three types of inorganic molecules that are important for life? 4. What are the four types of organic molecules that are important for life? P 23 1. Why is water called a “polar” molecule? 2. What are the four properties of water that make it so necessary for life? P 23 1. How is an ion different from an atom? 2. What is an electrolyte? . 3. What are some examples of electrolytes? P 25 1. Which type of compound is known as a proton donor, acid or base? Mosby items and derived items © 2008 by Mosby, Inc., an affiliate of Elsevier Inc. Test Bank 2-3 2. What does pH measure? 3. Is a solution with a pH of 8.5 acidic or basic? 4. How does a weak acid act as a buffer? P 27 1. What three elements are found in all carbohydrates? 2. What is the name of a simple sugar? 3. What process joins multiple simple sugars? 4. What is another name for a complex, multiunit carbohydrate? P 30 1. What three elements are found in all lipids? 2. Which atom makes up the backbone of all lipid molecules? 3. Which lipids are polar, neutral fats or phospholipids? 4. What is the function of lipids in the body? Mosby items and derived items © 2008 by Mosby, Inc., an affiliate of Elsevier Inc. Test Bank 2-4 P 34 1. What element is found in all proteins that is not found in carbohydrates or lipids? 2. What are the building blocks for proteins? 3. What is the name of the bond holding two amino acids together? 4. What is a peptide? 5. How does an enzyme work? P 36 1. How does a nucleotide differ from a nucleic acid? 2. What three parts compose a nucleotide? 3. How many nitrogenous bases are there? 4. Explain the structure of DNA. . 5. Why is DNA important to life? P 38 1. How does an ATP molecule differ from a nucleotide? 2. How does an ATP molecule supply a cell with energy to do work? Mosby items and derived items © 2008 by Mosby, Inc., an affiliate of Elsevier Inc.