CHEM 120 Final Exam Questions/Answers (Updated)

CHEM 120 Final Exam Questions/Answers (Updated)1. Question: (TCO 12) Transcription is the process by which DNA passes information to (Pts. : 5) another strand of DNA. transfer RNA. ribosomal RNA. messenger RNA. a new cell. 0 2 MultipleChoice 5 2. Question: (TCO 12) The portion of an enzyme where the substrate “fits” during the reaction is called the (Pts. : 5) active site. action site. reaction site. substrate site. inhibitor site. 0 3 MultipleChoice 8 3. Question: (TCO 12) Which of the following is not an unsaturated fatty acid? (Pts. : 5) CH3CH2CH2CH=CHCOOH CH3CH=CHCH=CHCOOH CH3CH2CH2CH2CH2COOH CH3CH2CH2CH2CH2CH=CHCOOH CH3CH=CHCH2CH=CHCOOH 0 5 MultipleChoice 10 4. Question: (TCO 12) The helical structure of certain proteins, such as wool, is a part of the protein’s (Pts. : 5) primary structure. secondary structure. tertiary structure. primary and secondary structures. secondary and tertiary structures. 0 7 MultipleChoice 15 This study source was downloaded by from CourseH on :17:42 GMT -05:00 5. Question: (TCO 12) Which of the following is a disaccharide? (Pts. : 5) Cellulose Starch Fructose Galactose Lactose 0 9 MultipleChoice 17 6. Question: (TCO 12) In cells, protein synthesis occurs on the (Pts. : 5) Golgi apparatus. mitochondria. nucleus. cytoplasm. ribosomes. 0 1 MultipleChoice 20 7. Question: (TCO 12) Which of the following is a monosaccharide? (Pts. : 5) Cellulose Starch Galactose Mannose Lactose 0 3 MultipleChoice 23 8. Question: (TCO 4) The best description of the shape of an ammonia molecule is _____. (Pts. : 5) linear pyramidal bent tetrahedral None of the above 0 4 MultipleChoice 27 9. Question: (TCO 4) Which of the following substances does not have polar covalent bonds? (Pts. : 5) CO2 This study source was downloaded by from CourseH on :17:42 GMT -05:00 Br2 CH4 NF3 0 7 MultipleChoice 28 10. Question: (TCO 8) According to the Bronsted-Lowry definition, which chemical in the following reaction is the acid? H2CO3 + H2O - H3O + + HCO3 - (Pts. : 5) H2O HCO3 - H2CO3 H3O + None of the above 0 9 MultipleChoice 31 11. Question: (TCO 8) According to the Bronsted-Lowry definition, which chemical in the following reaction is the base? H2CO3 + H2O - H3O + + HCO3 - (Pts. : 5) H2O H2CO3 HCO3 - H3O + None of the above 0 2 MultipleChoice 34 12. Question: (TCO 2) Match the atom with the appropriate description. (Pts. : 15) Potential Matches: 1 : Boron (B) 2 : Carbon (C) 3 : Neon (Ne) 4 : Nitrogen (N) 5 : Lithium (Li) Answer 5 : An atom, which has a mass number of 7, with 4 neutrons 1 1 : An atom, which has a mass number of 11, with 6 neutrons 2 This study source was downloaded by from CourseH on :17:42 GMT -05:00 2 : An atom, which has a mass number of 12, with 6 neutrons 3 4 : An atom, which has a mass number of 14, with 7 neutrons 4 3 : An atom, which has a mass number of 20, with 10 neutrons 5 0 4 Matching 1 13. Question: (TCO 10) Match the organic compound with its use or characteristic. (Pts. : 15) Potential Matches: 1 : Disinfectant 2 : Fingernail polish remover 3 : Alkaloid 4 : Insecticide 5 : Pineapple flavor Answer 4 : Dichlorodiphenyltrichloroethane 1 1 : Formaldehyde 2 2 : Acetone 3 3 : Caffeine 4 5 : Ethyl butyrate 5 0 5 Matching 5 14. Question: (TCO 9) Match the organic compound with its name. (Pts. : 15) Potential Matches: 1 : Ethanoic acid 2 : 1-propanol 3 : Ethylamine 4 : Heptanal 5 : Pentyl acetate Answer 1 : CH3COOH 1 4 : CH3CH2CH2CH2CH2CH2CHO 2 2 : CH3CH2CH2OH 3 5 : CH3COOCH2CH2CH2CH2CH3 4 3 : CH3CH2NH2 5 T