SUBiology_1010_-_Midterm_1_-_VERSION_A_-_with_answers

SUBiology_1010_-_Midterm_1_-_VERSION_A_-_with_answers -...

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Page 1 of 19 SUBiology 1010 - 2009 Midterm 1 – Biochemistry and Cell Biology – VERSION A 1) You are completing VERSION A. Choose A for this question or you will not be graded. A) Choose THIS ONE. B) C) 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) Van der Waals forces, hydrogen bonds, ionic bonds, covalent bonds B) Covalent bonds, ionic bonds, hydrogen bonds, Van der Waals forces C) Hydrogen bonds, Van der Waals forces, ionic bonds, covalent bonds D) Van der Waals forces, hydrogen bonds, covalent bonds, ionic bonds E) Ionic bonds, covalent bonds, hydrogen bonds, Van der Waals forces 4) 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.
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2 of 19 5) 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 6) 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) Serine would be in the interior, and alanine would be on the exterior of the globular protein. B) Alanine would be in the interior, and serine would be on the exterior of the globular protein. C) Both serine and alanine would be in the interior of the globular protein. D) Both serine and alanine would be on the exterior of the globular protein. E) Both serine and alanine would be in the interior and on the exterior of the globular protein. 7) Altering which of the following levels of structural organization could change the function of a protein? A)
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This note was uploaded on 03/12/2011 for the course BIOL 1010 taught by Professor Anafi/quinlan during the Fall '08 term at York University.

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SUBiology_1010_-_Midterm_1_-_VERSION_A_-_with_answers -...

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