SUBiology_1010_-_Midterm_1-_VERSION_C_-_with_answers

SUBiology_1010_-_Midterm_1-_VERSION_C_-_with_answers -...

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Page 1 of 19 SUBiology 1010 - 2009 Midterm 1 – Biochemistry and Cell Biology – VERSION C 1) You are completing VERSION C. Choose C for this question or you will not be graded. A) B) C) Choose THIS ONE D) E) 2) A theory is _____. A) a poorly supported idea that has little experimental support but might be correct. B) not correct unless it is several years old and many people believe it. C) a concept that once established in the scientific literature can never be modified or rejected. D) a well-supported concept that has broad explanatory power. E) the same thing as a hypothesis. 3) Place the following in order from weakest to strongest A) Covalent bonds, ionic bonds, hydrogen bonds, Van der Waals forces B) Hydrogen bonds, Van der Waals forces, ionic bonds, covalent bonds C) Van der Waals forces, hydrogen bonds, covalent bonds, ionic bonds D) Ionic bonds, covalent bonds, hydrogen bonds, Van der Waals forces E) Van der Waals forces, hydrogen bonds, ionic bonds, covalent bonds 4) A drug used to relax bronchial muscles, improving airflow and thus offering relief from asthma, consists only of one enantiomer, the R-form. Why may this be? A) The other enantiomeric form may have different or opposite physiological effects. B) It is impossible to synthesize both enantiomers simultaneously. C) It is much less expensive to synthesize one enantiomer at a time. D) The R-form of a molecule is always easier to construct. E) It is likely that only the R-form has been studied.
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Page 2 of 19 5) Which of the following statements is true regarding the linking of these two molecules? A) These two molecules will be joined by a 1-4 glycosidic linkage following a dehydration reaction. B) These two molecules will be joined by a 1-4 glycosidic peptide bond following a dehydration reaction. C) These two molecules will be joined by a 4-1 glycosidic ester linkage following a hydrolysis reaction. D) These two molecules will be joined by a 4-1 glycosidic linkage following a hydrolysis reaction. E) These two molecules will be joined by a 1-4 glycosidic bond following a hydrolysis reaction. 6) Refer to the structural diagram below. Indicate the reaction that would return this molecule to the monomeric components, and indicate at which bond this reaction would occur. A) hydrolysis reaction occurring at bond D B) hydrolysis reaction occurring at bond B C) hydrolysis reaction occurring at bond C D) dehydration reaction occurring at bond D E) dehydration reaction occurring at bond C 7) The R group or side chain of the amino acid serine is —CH2-OH. The R group or side chain of the amino acid alanine is —CH3. Where would you expect to find these amino acids in a globular protein in aqueous (water) solution? A)
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This note was uploaded on 08/02/2009 for the course BIOLOGY biology taught by Professor Kelly during the Spring '09 term at Yonsei University.

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SUBiology_1010_-_Midterm_1-_VERSION_C_-_with_answers -...

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