key terms ch11

key terms ch11 - CHAPTER 11 TERMS nucleic acid A long-chain...

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CHAPTER 11 TERMS nucleic acid • A long-chain alternating polymer of deoxyribose or ribose and phosphate groups, with nitrogenous bases—adenine, thymine, uracil, guanine, or cytosine (A, T, U, G, or C)—as side chains. DNA and RNA are nucleic acids. nucleotide • The basic chemical unit in a nucleic acid. A nucleotide in RNA consists of one of four nitrogenous bases linked to ribose, which in turn is linked to phosphate. In DNA, deoxyribose is present instead of ribose. base • (1) A substance that can accept a hydrogen ion in solution. (Contrast with acid.) (2) In nucleic acids, the purine or pyrimidine that is attached to each sugar in the backbone. sugar-phosphate backbone adenine (A) • A nitrogen-containing base found in nucleic acids, ATP, NAD, and other compounds. guanine (G) • A nitrogen-containing base found in DNA, RNA, and GTP. cytosine (C) • A nitrogen-containing base found in DNA and RNA thymine (T) • A nitrogen-containing base found in DNA. uracil (U)
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key terms ch11 - CHAPTER 11 TERMS nucleic acid A long-chain...

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