a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease

Bacteria is something invisible to the eye.

yon manm nan yon gwo gwoup mikwo-òganis inik ki gen miray selil men manke òganèl ak yon nwayo òganize, ki gen ladan kèk ki ka lakòz maladi

Bakteri se yon bagay ou paka wè ak je a.