They are multicellular just as people are. They have trillions of cells.
Multicellular
They are multicellular, complex organisms.
you times the singled celled one by two to get the multicellular organisim
single-celled
Multicellular
single-celled
All invertebrate means is lacking a spinal chord, so, there are many single-celled and many multi-celled invertebrates.
No. That suggests something rather complicated (and multicellular) for a one celled organism.
single celled
Single celled is when an organism only has one cell, such as a paramecium. Single-celled is the same as unicellular. There is two kinds of cells: unicellular (single-celled) and multicellular ( has many cells).
Usually Bacteria is unicellular, but in some cases multicellular.
archaebacteria are the type of bacteria which dates back to the first forms of life on earth. And its my guess that bacteria are unicellular whether unicellular or multicellular