Topic 3 - Chemicals of Life
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What does the green circle represent?
Phosphate - the PO4-3 group
What does the blue pentagon represent?
The pentose sugar - deoxyribose.
What is a nucleotide?
3 parts - sugar (deoxyribose), phosphate group and a base
What four bases are found in DNA?
- G - guanine
- C - cytosine
- A - adenine
- T - thymine
How do 2 DNA nucleotides link together?
Covalent bond between sugar
(of one nucleotide) and phosphate
(of the next one)
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