Pentose monosaccharide, nitrogenous bass and phosphate group PO4-
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Joining nucleotides
Joint in a condensation reaction which forms a covalent bond between the phosphate group at 5’ and the hydroxyl group at the 3’ carbon of an adjacent pentose sugar
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Polynucleotides
Nucleotides joined by a phosphodiester bond forming a long, strong sugar-phosphate backbone
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Deoxyribonucleic acid (DNA)
Pentose sugar=deoxyribose (one less oxygen) and 4 different nitrogenous bases
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Pyrimidines
Thymine and cytosine - contain a single carbon ring structure
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Purines
Adenine and guanine - contain double carbon ring structures
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DNA double helix
Two strands of polynucleotides which run antiparallel to each other with hydrogen bonds between the adjacent bases
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Cytosine and guanine
3 hydrogen bonds
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Adenine and thymine
2 hydrogen bonds
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Function of Ribonucleic acid (RNA)
Transfer of genetic information from DNA to ribosomes
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Differences in RNA nucleotides
Pentose sugar is ribose and the base thymine is replaced with uracil
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Other cards in this set
Card 2
Front
What makes up a nucleotide
Back
Pentose monosaccharide, nitrogenous bass and phosphate group PO4-
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