Cell and Molecular BS/BA Major confusion?

<p>for Johns Hopkins University:</p>

<p>i am interested in neuroscience and cell/molecular biology. the univeristy offers:</p>

<p>Cell/Molecular concentration in Neuroscience B.A.
Molecular and Cellular Biology B.S.</p>

<p>should i plan on doing a double major in both? what exactly is the difference with BA/BS?</p>

<p>i also want to do pre-med track...</p>