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Module 1: Biological Molecules
2.1.2 Nucleic Acids

(a) state that deoxyribonucleic acid (DNA) is a polynucleotide, usually double stranded made up of nucleotides
containing the bases adenine (A), thymine (T), cytosine (C) and guanine (G)
Nucleic acids come in two forms: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).































(b) state…

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Module 1: Biological Molecules
DNA RNA
Sugar Deoxyribose sugar Ribose sugar
Strands Double stranded Single stranded
Bases ATCG AUCG






(c) describe, with the aid of digrams, how hydrogen bonding between complementary base pairs (A to T, G to C)
on two antiparallel DNA polynucleotides leads to the formation of a…

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Module 1: Biological Molecules












Structure to Function in DNA:
Structure Function
Sequences of bases Information storage the information is in the form of codes to build proteins
Long A large amount of information can be stored
Basepairing rules Means that complementary strands of information can be stored
Double helix structure…

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Module 1: Biological Molecules





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