Test1_2008_2009 - Name Date TEST 1(CHAPTERS 1 AND 2 1 In a...

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Name: ____________________________________________ Date: ____________ TEST 1 (CHAPTERS 1 AND 2) 1. In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by a. Hydrogen bonds b. Nonpolar covalent bonds c. Polar covalent bonds d. Ionic bonds e. Van der Waals interactions 2. The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called? a. A covalent bond b. A hydrogen bond c. An ionic bond d. A hydrophilic bond e. A hydrophobic bond 3. In one modern classification system, organisms are grouped into five a. Kingdoms b. Phyla c. Genera (genus) d. Species e. Domains 4. What determines the cohesiveness of water molecules? a. Hydrophobic interactions b. Nonpolar covalent bonds c. Ionic bonds d. Hydrogen bonds e. Both A and C 5. Ice is lighter and floats in water because it is a crystalline structure in which each water molecule is bonded to a maximum of four other water molecules by which kind of bond? a. Ionic b. Hydrogen c. Covalent d. A and C only e. A, B, and C
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Name: ____________________________________________ Date: ____________ 6. In a living cell, which compound serves primarily as a substance in which most molecules and ions are dissolved? a. Glycerol b. Glucose c. Water d. Cellulose e. Sodium Chloride 7. Which of the following ionizes completely in solution and is consider to be a strong base? a. NaCl b. HCl c. NH 3 d. H 2 CO 3 e. NaOH 8. Which of the following solutions has the greatest concentration of hydroxide ions [OH - ]? a. Lemon juices at pH 2 b. Vinegar at pH 3 c. Tomato juice at pH 4 d. Urine at pH 6 e. Seawater at pH 8 9. One liter of a solution of pH 2 has how many more hydrogen ions (H+) than 1 L of a solution of pH 6? a. 4 times more b. 400 times more c. 4,000 times more d. 10,000 times more e. 100,000 times more 10. Which four elements make up approximately 96% of living matter? a.
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This note was uploaded on 11/07/2009 for the course BIO 066.6 taught by Professor Darby during the Spring '09 term at Sierra.

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Test1_2008_2009 - Name Date TEST 1(CHAPTERS 1 AND 2 1 In a...

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