Introductory General Chemistry I with lab - Solved Exam IV | CHEM 1020, Exams of Chemistry

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Chem 1020 EXAM IV 4-11-13 Name Multiple Choice. Place the CAPITAL LETTER of the best response in the blank provided at the left. 3 points each. Co 1. Which of the following statements is TRUE about fatty acids? (A) synthesized in the body in even numbers of C atoms _(B) may be saturated or unsaturated 4€)} naturally-occurring-ones-are-usually-cis= (D) very insoluble in water (E) all of the above are true 2.2. Which of the following is an essential fatty acid? (A) stearic acid (B) linoleic acid (C) caproic acid (D) myristic acid (E) acetic acid yobs The food industry produces “partially hydrogenated soybean oil” (A) to create a product with a lower melting point (B) in order to produce more healthful ¢rans-fats Gu changes an unsaturated oil into a more saturated fat to create more CH=CH groups in the triglycerides (E) by hydrolysis 4. What is a “saponifiable” lipid? (A) one that can be changed into a solid (B) one that can be changed into a liquid C) one with an ester (C=O), phosphoester (P=O), or sulfoester (S=O) group (D) a molecule with all saturated fatty acids (E) a molecule with four fused rings —k< 5. A molecule is a lipid (A) if it contain both a carbonyl group and an amine group (B)i if it is isolated completely from animal sources ©) )when its characteristics include being insoluble in water and of biological origin (D) when it has both a polar region and a nonpolar region (£) all of these & 6. The sodium salt of a fatty acid is a(n) (A) soap (B) wax (C) triglyceride (D) glycolipid (E) steroid \ )__ 7.What structural feature is present in an omega-3 fatty acid? (A)3 C=C bonds (B)4 fused rings (C)ahairpinturn (D) a C=C three C’s from the end 8. The primary structure of a protein is held together with (A) o-helix (B) B-sheet (C) hydrogen bonds (D) covalent bonds _(E) ionic bonds \ 2_ 9. A prosthetic group (A) is necessary for a lipid to function (B) could be a vitamin or a metal ion (C) causes hydrolysis of lipids (D) inchides a polar side chain (E) all of these a