Multiple choice: Circle the best answer for each of the following questions. There is only one correct answer for each question.

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1 Page 1 of 6 Multiple choice: Circle the best answer for each of the following questions. There is only one correct answer for each question. (3 points each) 1. The number of dichloroisomers that can be formed by the monochlorination of 1-chlorobutane is: a) 1 b) 2 c) 3 d) 4 2. Which formula is cyclopentane? a) b) C 5 H 12 c) d) 3. Friedrich Wohler disproved the vital force theory by: a) Isolating urea from a nonliving source. b) Producing an inorganic compound from an organic compound. c) Producing an organic compound from nonliving materials. d) Both (a) and (c) are correct. 4. Which of the following is not a correct name for the alkane shown with it? a) CH 4, methane b) C 3 H 8, propane c) C 6 H 14, heptane d) C 9 H 20, nonane 5. Which of the following statements is not true: a) Formic acid is produced by ants. b) Carboxylic acids are chemically similar to aldehydes and alcohols. c) Organic anhydrides form when water is eliminated from two molecules of a carboxylic acid. d) Natural waxes are esters with high molar mass, and they are found in certain plants. 6. Acid hydrolysis of an amide produces the salt of a carboxylic acid. 7. Which object below is achiral? a) glove b) shoe c) scissors d) sphere 8. What is the defining characteristic of a lipid? a) All lipids are soluble in non-polar organic solvents. b) All lipids have structures based on a system of four fused carbon rings. c) All lipids have sulfur atoms in their structure. d) All lipids are esters. Page 1

2 Page 2 of 6 9. The primary structure of a protein is established by the number, kind, and sequence of amino acid units comprising the polypeptide chain. 10. Translation refers to the process whereby: a) RNA is synthesized b) DNA is reproduced c) protein is synthesized d) all of these 11. Zinc, copper, and cobalt are examples of: a) vitamins b) major elements c) trace elements d) none of these 12. A meal of beans and rice provides a complete protein. 13. Glycolysis can be termed as: a) anaerobic and catabolic b) aerobic and anabolic c) aerobic and catabolic d) anaerobic and anabolic 14. In the liver, gluconeogenesis can be used to convert the following compound(s) into glucose: a) glycerol b) lactate c) some amino acids d) all of these 15. Which of the following substance(s) is/are not found in coenzyme A? a) adenine and ribose b) thioethanolamine c) thiamine d) pantothenic acid 16. Which of the following correctly describes conditions in a working muscle cell? a) oxygen produced, acidity increases, carbon dioxide forms b) oxygen consumed, acidity increases, carbon dioxide forms c) oxygen consumed, acidity decreases, carbon dioxide forms d) oxygen produced, acidity decreases, carbon dioxide consumed 17. Which of the following processes involve an anaerobic pathway? a) Embden-Meyerhof pathway b) Citric Acid Cycle c) Glycolysis d) all of the above are correct 18. The citric acid cycle oxidizes carbons to CO A multistep biochemical pathway will form intermediates which may be used by other cellular pathways. Page 2

3 Page 3 of Which compound listed is classified a ketone body? a) palmitic acid b) beta-hydroxybutyric acid c) hippuric acid d) hydroxyacetic acid 21. The following amino acid serves as a major nitrogen-transport molecule in the blood stream: a) L-glutamic acid b) L-glutamine c) L-glycine d) praline 22. The abbreviation, CoA, stands for: a) cobalt A b) cofactor A c) coprotein A d) coenzyme A 23. Which of the following is not true? a) High fat diets may have too much energy. b) No more than 30% of calories should come from fat. c) Fats are stored primarily in adipose tissue. d) Triacylglycerols are transported from the blood to adipose cells. 24. Transamination is the first step in the conversion of the amino acid carbon skeletons to fats or carbohydrates. 25. The complete oxidation of a fat produces carbon dioxide and oxygen molecules. Page 3

4 Page 4 of 6 Short Answer: Answer each of the following questions in the space provided. Please print legibly or take the risk of losing points. Each of the questions is worth 5 points. 26. Write a balanced chemical equation for the complete combustion of 2-methylbutane. 27. Draw the cis and trans isomers for the following fatty acid. CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH 28. How would you distinguish between a solution consisting of an aldehyde and a solution consisting of a ketone? Page 4

5 Page 5 of Identify with arrows all the amide functional groups in the following molecule. 30. Draw the mirror image for the structure below: Page 5

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