Sugar, phosphate group, adenine, guanine, cytosine, thymine - All the components of a DNA molecule., Chromosome - A structure inside the nucleus made up of a tightly coiled DNA molecule., DNA - A double helix molecule which provides instructions for all the chemical processes required to build an organism., Sugar, phosphate, base - The three components of a nucleotide., Deoxyribose - The name of the sugar molecule in the DNA helix., Adenine-Thymine, Guanine-Cytosine - These bases pair together., Hydrogen - The bonding that holds the two strands of DNA together., TCGAGTC - The complementary DNA sequence to AGCTCAG., 55 - The number of adenines present in 100-base pair DNA sequence containing 45 cytosines., Nucleus - The organelle inside the cell where DNA is held.,

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