The document describes in detail the role, structure and use of nucleic acids in the body. The document talks about DNA, Adenine, Thymine, Cytosine and Guanine. These are mostly class notes and syllabus notes. I recommend using this document when revising for the test, especially a topic test. Ther...
Biology ib SL and HL paper 1 and paper 2 review (with links and resources)
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Nucleic acids
Nucleic acids have 4 nucleic acids
• GCAT
• Each cell has 2 meters of DNA.
• Remember to finish up proteins.
• https://www.biologyforlife.com/nucleicacids.html
Facts about structure of DNA
• DNA is a double helix; it has 2 strands that twists around each other.
• It has a sugar phosphate backbone.
• Bases join the 2 strands by hydrogen bonds. These bases are cytosine, guanine, adenine and
thymine.
• Complementary base pairing is a key idea in genetics: C pairs with G, T with A.
• Each strand of DNA can be millions of base-pairs in length and is coiled up to make
chromosomes. DNA is found in chromosomes.
A nucleotide diagram
•
• DNA stands for Deoxyribonucleic acid.
• If the sugar is ribose, its rna.
• If the sugar is deoxyribose its dna.
• The bond between pentose sugar and the base and group are covalent bonds. Phosphate
groups joins carbon 5, nitrogenous base joins carbon 1.
• https://ib.bioninja.com.au/standard-level/topic-2-molecular-biology/26-structure-of-dna-
and-rna/nucleotides.html
, •
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