<p>Or are we good to go as long as we have taken Chem 3B?</p>
<p>Not a pre-req for the upper div courses but a requirement for the degree - [MCB</a> Major Requirements - At a Glance](<a href=“http://mcb.berkeley.edu/undergrad/major/major-requirements/requirements/]MCB”>MCB Major Requirements - At a Glance | Molecular and Cell Biology)</p>
<p>You can declare without having completed all the pre-reqs and could defer it to the end, but at some point it is necessary to finish the degree.</p>