Answer:
DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
<span>(C) container for the fertilized egg
Hope this helps!</span>
<span>In the reaction that builds a fat, hydroxil groups react with carboxyl groups. Both hydroxil and carboxyl are </span><span>functional </span>groups<span> in biological molecules. The h</span>ydroxil group is group of atoms found in organic compounds, expressed with the formula OH. The carboxyl group are found in acids.