What is the individual science lab course like? Difficulty wise?

Ive taken Chem/bio/anatomy and physiology at a community college. You couldnt register separately for the lab. So your grade counted for both. I'm planning on transferring and they offer it separately, do u have individual tests for the lab itself? What I'm asking is, it a lot of extra work if ur taking other courses? I plan in taking my 3 NSC courses and Ochem with lab and physics 2 with lab, what is the lab difficulty like, it's just a 1 credit course. At my cc it's laid back and the class comes with lab