4.Study_Guide__Nucleic_Acids

4.Study_Guide__Nucleic_Acids - Study Guide 4 Nucleic Acids...

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Study Guide 4 Nucleic Acids (Kopachik) Terms to know Polynucleotide Base Purine Adenine Guanine Pyrimidine Cytosine Thymine Uracil Nucleoside Deoxyribose ribose Nucleotide Phosphodiester bond DNA (deoxyribonucleic acid) Polarity Antiparallel Complementarity RNA (ribonucleic acid) Messenger RNA (mRNA) Transfer RNA (tRNA) Ribosomal RNA (rRNA) DNA replication Transcription Translation Main points: 1. Nucleic acids are polymers of nucleotides. Nucleotides are made of one of five bases (two purines adenine and guanine and three pyrimidines, cytosine, thymine and uracil) with DNA having thymine and RNA having uracil. The base plus the deoxyribose sugar is in the DNA nucleotide monomers but the base plus a ribose sugar is in RNA. Base plus sugar= nucleoside and adding a phosphate group makes a nucleotide. 2. Nucleotides play roles not only as monomers but some (ATP, GTP) are used as energy currency and ATP is often used in protein activity regulation. 3. DNA normally exists as a double helix with a deoxyribose to phosphate phosphodiester bond holding it together in the backbone with the relatively flat bases across from each other in the middle. The two
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4.Study_Guide__Nucleic_Acids - Study Guide 4 Nucleic Acids...

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