Exam 24: Polymer Materials: Synthetic and Biological

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When L-lysine (R = −(CH2)4NH2)is reacted with a large excess of strong base,which of the following ions is the predominant species in solution?

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Which of the following structures is the best representation for the amino acid alanine under physiological conditions?

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Which type of molecule attaches itself to a ribosome,where it serves as a pattern for protein biosynthesis?

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What is the charge on each phosphate group in DNA in an aqueous solution near physiological pH?

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Which of the following amino acids has a hydrophobic side chain?

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What is the functional group corresponding to a peptide bond?

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Which of the following statements is correct?

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The side chain on the amino acid phenylalanine The side chain on the amino acid phenylalanine   is classified as is classified as

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The polymer The polymer   is formed by addition of which of the following? is formed by addition of which of the following?

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The amino acid L-lysine has the amine side chain R = −(CH2)4NH2.At low pH,all ionizable groups are protonated.What is the net charge on this fully protonated form of L-lysine?

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Where in the cell does protein synthesis cell take place?

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Which of the following combinations can produce a condensation polymer? (R and R' are alkyl groups)

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A compound used to make a polymer and from which the polymer's unit arises is called a _____.

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A(n)_____ is a chemical species of very high molecular weight made up from many units of low molecular weight covalently linked together.

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The overall shape of a protein is maintained by

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In an electrically conducting polymer,what is a "hole"?

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The polymer formed from ethylene glycol (HOCH2CH2OH)and1,3-propanedicarboxylic acid (HOOCCH2COOH)is what type of polymer? I.addition polymer II.condensation polymer III.homopolymer IV.copolymer

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What are the building blocks of nucleic acids?

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Which of the following pairs of substances could form a polyester?

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Which of the following is an amino acid?

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