101samples08 - Biology 101 Sample questions Multiple...

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Biology 101 Sample questions Multiple choice: Choose the most appropriate answer. 1. An atom with an atomic number of one and an atomic weight of 3 has a) 1 proton, 1 electron and 1 neutron. b) 1 proton, 1 electron and 2 neutrons. c) 1 proton, 1 electron and 3 neutrons. d) 3 protons, 3 electrons and 0 neutrons. 2. How many electrons would be expected in the outer energy level of an atom with atomic number 5? a) 1 b) 3 c) 5 d) 7. 4. In the structure on the right, a careless scientist O-C=C-N has left out some atoms - all of them hydrogens: How many hydrogen atoms must be added to correctly complete the structure so that all valences are correct? 6. How many unpaired electrons are in the outer shell of nitrogen? a) 1 b) 2 c) 3 d) 4 9. Which of the following is a polar covalent bond? a) H-N b) C-C c) H-O d) C-H e) a and c 12. Which element is found in DNA, but not in protein? a) oxygen b) nitrogen c) phosphorus d) sulfur.
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15. The ability of water to stick to the walls of xylem tubes in plants is an example of its property of
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This note was uploaded on 04/29/2008 for the course BIOL 101 taught by Professor Haas during the Spring '08 term at Loyola Chicago.

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101samples08 - Biology 101 Sample questions Multiple...

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