New to modding, mods don't show up in-game

[baronjutter]

Hi guys, I'm new to using any mods in rimworld despite playing for ever.  I downloaded a few mods that stated they were compatible with the latest version.  The problem is that other than quorn and the embrasures, nothing else shows up. No new turrets, no prosthetic/implant stuff.  The bio-engineering mod said to be loaded last, and it is, but in both a fresh world and an old save I didn't spot any new workbenches or research options.  Am I doing something wrong? Are these mods not compatible?

[Haplo]

Did you install it like it is described here?
https://ludeon.com/forums/index.php?topic=6223.0
Your issue sounds like a problem with your structure.
Please take an extra careful look at position 2 and 3.
Are your mods unzipped? Is the path to the files correct, no double path? (this is wrong: /mods/modname/modname/defs)