<span>The nitrogenous base pairs, which are linked by hydrogen </span>bonds<span> that also </span>hold<span> the </span>strands together<span>, are between this backbone.
There are 3 hydrogen </span>bonds <span>between guanine and cytosine.</span>
The purpose of a sharps disposal bin in a laboratory is for when your done using things such as dirty needles, medical items, broken pieces of metal. This is to prevent you from either being exposed to an item that is sharp or to just prevent you from something on the item that could cause harm.
