University of Maryland, College Park
BSCI 170
Fimal Exam BSCI 170 N Allewell December 16, 2016 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? A) Dehydration reactions eliminate water from membranes; hydrolysis react
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Fimal Exam BSCI 170 N Allewell December 16, 2016 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? A) Dehydration reactions eliminate water from membranes; hydrolysis reactions add water to membranes. B) Hydrolysis reactions create polymers and dehydration reactions create monomers. C) Dehydration reactions assemble polymers; hydrolysis reactions break polymers apart. D) Dehydration reactions and hydrolysis reactions assemble polymers from monomers. 1) 2) How do phospholipids interact with water molecules? A) The polar heads interact with water; the nonpolar tails do not. B) Phospholipids dissolve in water. C) The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract). D) Phospholipids do not interact with water because water is polar and lipids are nonpolar. 2) 3) Microtubules are hollow tubes formed by dimers made up of two closely related proteins, a-tubulin and b-tubulin. Mutating a single amino acid at the interface between the two monomers of the dimer prevents microtubule formation. From this information alone, we can conclude that the mutated subunit has ______________ A) only altered primary structure B) only altered tertiary structure C) only altered quaternary structure D) altered primary structure and altered quaternary structure; the secondary and tertiary structures may or may not be altered 3) 4) You disrupt all hydrogen bonds in a protein. What level of structure will be preserved? A) primary structure B) secondary structure C) tertiary structure D) quaternary structure 4) 5) Which organelle is the primary site of ATP synthesis in eukaryotic cells? A) Golgi apparatus B) mitochondrion C) peroxisome D) lysosome
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