f08 bio202 mt1a

f08 bio202 mt1a - Exam...

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Unformatted text preview: Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1 Which functiona l group is not present in this molecule ? 1) _____ sulfhydryl B) hydroxyl C) carboxyl D) amino The extracellu lar matrix is thought to participat e in the regulatio n of animal cell behavior by communi cating informati on from the outside to the inside of the cell via which of the following ? 2) _____ DNA and RNA plasmodesmata the nucleus gap junctions integrins A covalent chemical bond is one in which 3) _____ outer- shell electrons of one atom are transferred to the inner electron shells of another atom. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms. electrons are removed from one atom and transferred to another atom so that the two atoms become oppositely charged. the inner- shell electrons of one atom are transferred to the outer shell of another atom. outer- shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. What gives rise to the cohesiven ess of water molecule s? 4) _____ nonpolar covalent bonds hydrophobic interactions hydrogen bonds ionic bonds both A and C Which of the following is an example of potential rather than kinetic energy? 5) _____ water rushing over Niagara Falls a firefly using light flashes to attract a mate an insect foraging for food a food molecule made up of energy- rich macromolecules a boy mowing grass Use the information extracted from the periodic table in Figure 2.2 to answer the following questions. Figure 2.2 How many electrons does nitrogen have in its valence shell? 6) _____ 7 B) 14 C) 8 D) 5 E) 2 What is a triacylgly cerol? 7) _____ a protein with tertiary structure a molecule formed from three alcohols by dehydration reactions a lipid made with three fatty acids and glycerol a carbohydrate with three sugars joined together by glycosidic linkages a lipid that makes up much of the plasma membrane Humans can digest starch but not cellulose because 8) _____ humans have enzymes that can hydrolyze the beta ( ) glycosidic linkages of starch but not the alpha ( ) glycosidic linkages of cellulose. the monomer of starch is glucose, while the monomer of cellulose is galactose. the monomer of starch is glucose, while the monomer of cellulose is maltose. humans harbor starch- digesting bacteria in the digestive tract. humans have...
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This note was uploaded on 07/10/2010 for the course BIO 204 taught by Professor O'neal during the Spring '07 term at SUNY Stony Brook.

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f08 bio202 mt1a - Exam...

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