FYI: I created [[Template:Missing articles in category]], which links to my category-based Most Wanted tool on the toolserver. So,
{{Missing articles in category|Biochemistry}}
will link to a page showing the up-to-the-minute (well, toolserver minute;-) most wanted articles linked form articles in that category, to depth 3.
On larger categories, this will take a few minutes (!) to generate, however, it might be a big help for smaller category trees with only a few hundered articles.
Cheers, Magnus