12 DNA and RNA (PDF)
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Title: DNA and RNA
Author: bethany noller
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DNA
The Molecule
of
Heredity
DNA
• Deoxyribose
Nucleic Acid
– “instructions for
life” for all cells
– In nucleus of
eukaryotes; in
cytoplasm of
prokaryotes
DNA
– Controls the cell
• By producing protein
Structure of DNA
• DNA is a nucleic
acid made of
nucleotide
subunits
Structure of DNA
Each nucleotide contains 3 parts
1. Deoxyribosea simple sugar
2. Phosphate group
3. Nitrogen Base-4 different types
Structure of DNA
4 Nitrogen BasesDouble ringed bases
1. Adenine (A)
2. Guanine (G)
Structure of DNA
4 Nitrogen BasesSingle ringed bases
3. Thymine (T)
4. Cytosine (C)
Structure of DNA
Each nucleotide contains:
1 phosphate
1 deoxyribose sugar
1 of the 4 nitrogen bases
4 Nucleotides of DNA
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