DNA The Molecule Of Life Flashcards
Each cell has
46 human chromosomes, 2 meters of DNA, 3 billion DNA subunits(the bases A,T,C,G), approximately 30,000 genes code for proteins that perform most life functions
DNA stands for what
Deoxyrubonucleir acid
Where is DNA located
Nucleus
What does DNA do
Stores, copies & transmit genetic info (genes); gene code for proteins determining cell functions & traits
DNA is a
Nicklaus acid (built by phosphates, deoxyribose aka sugar, and nittogen bases)
Nucleic acid
Chains of nucleotides linked by covalent bonds
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A&G=T&C
Nitrogen bases
Putine- double ring
Adenine
Guanine
Pyramids nucleotides
2 single ring
Thymine
Cytosine
Double helix
2 strands in a twisted ladder with covalent bonded sugar- phosphate rails & H-bonded base pair rungs
The 2 strands are
Complimentary and match according to base pair rules.
Antiparallel
2 strands of DNA run in opposite directions (5’ carbon 3’ carbon at end)