r B1o 499-0410, T4 B-V1 Na MULTIPLE CHOICE. Choose the one alternative that best
ID: 199113 • Letter: R
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r B1o 499-0410, T4 B-V1 Na MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. metabolized to provide energy. Only a small portion of these monomers are used for synthesis of new macromolecules. The net result is that 1) In animal metabolism, most of the monomers released by digestion of food macromolecules are1) A) the water consumed is exactly balanced by the water generated, to maintain homeostasis. B) water is consumed by animal metabolism. C) water is generated during homeostasis, but water is consumed during periods of growth. D) water is consumed during homeostasis, but water is generated during periods of growth. E) water is generated by animal metabolism. 2) 2) All of the following are polysaccharides except A) cellulose. B) amylopectin. C) glycogen. D) chitin. E) lactose. 3) 3) Polysaccharides, triacylglycerides, and proteins are similar in that they A) are synthesized from subunits by dehydration reactions. B) are synthesized as a result of peptide bond formation between monomers. C) are synthesized from monomers by the process of hydrolysis. D) are decomposed into their subunits by dehydration reactions. E) all contain nitrogen in their monomer building blocks. 4) Normal hemoglobin is a tetramer, consisting of two molecules of hemoglobin and two molecules 4) of a hemoglobin. In sickle-cell disease, as a result of a single amino acid change, the mutant hemoglobin tetramers associate with each other and assemble into large fibers. Based on this information alone, we can conclude that sickle-cell hemoglobin exhibits A) altered quaternary structure. B) altered primary structure. C) altered secondary structure. D) altered tertiary structure E) altered primary structure and altered quaternary structure; the secondary and tertiary structures may or may not be altered. 5) Which of the following descriptions best fits the class of molecules known as nucleotides? 5) A) a pentose sugar and a purine or pyrimidine B) a nitrogenous base and a pentose sugar C) a nitrogenous base, a phosphate group, and a pentose sugar D) a phosphate group and an adenine or uracil E) a nitrogenous base and a phosphate groupExplanation / Answer
1. b) water is consumed by animal metabolism.
2. e) lactose.
3. a) they are synthesised from subunits by the dehydration reactions.
4. e) altered primary structure and altered quaternary structure; the secondary or tertiary structure may or may not be altered.
5. c) a nitrogenous base, a phosphate group, and a pentose sugar.
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