Google indexes category pages (which changes everyday)

I noticed that Google indexes my website by its category page

Example (website.url/page/2 or website.url/category/page/2)

but the content changes everyday. Is there a way to have it indexed by article url instead? I am using fancy permalinks with just website.url/article_title .

In my horizontal navigation bar at the top I do have actual url links for each different category on my website. Also right above the loop and after the loop I am using WP Digg Style Pagination for navigation. Could these have an effect on the way Google indexes my site?