I think its pulmonary circulation too.
This would be asexual reproduction
Answer;
10 bacteria cells can fit into an animal cell.
Explanations;
Cells can vary greatly in terms of size and shape.Bacterial cells are very small, they are about 10 times smaller than most plant and animals cells. most bacterial cells range in size from 1 to 10 micrometers (in length). The size of an animal cell on the on the other hand ranges from 10 to 100 micrometers.
