Ch.3 of Openstax: https://openstax.org/books/microbiology/pages/3-introduction

Cool interactive for cells https://learn.genetics.utah.edu/content/cells/insideacell20/

Intro to plasmids (they can be used as tools of genetic engineering) https://youtu.be/SdqJFA6mOkI?si=ro8jXgtgtNVPfbXg

Endospores in the food industry: https://youtu.be/L9uAf9Bsmvg?si=5vTKw6Pfv-5j9J50