New AHSGE Science Study Guide - Birmingham City Schools

Abiotic factors Food Parasite-host . Air Food chain pH ... a portion of DNA composed of a base, a sugar and a phosphate . 4 bases: A pairs with T C pairs with G. DNA is arranged in a double helix – has 2 strands and twists like a ladder. DNA holds the code for the making of proteins needed for life. Replication – process in which DNA makes a copy of itself – it unzips and free bases ... ................
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