10 BIOTECHNOLOGY Flashcards
(34 cards)
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31
what is DNA sequencing?
determination of the precise order of nucleotides in a sample of DNA
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how is DNA synthesised?
from 4 nucleotides, each with different nitrogenous base - adenine, cytosine, guanine, thymine
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why are nucleotides commonly called deoxynucleotide triphosphate
consist of three phosphate groups joined to the sugar deoxyribose with its base
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what happens with DNA forms?
- each nucleotide loses two phosphate groups
- the sugar molecule loses a hydrogen atom from the hydroxy group (OH) when it bonds to the phosphate group of an adjacent nucleotide
